| abscisin | Either of two substances that promote leaf abscission, (a) (more fully abscisin I)… | 1961 | Go To Quotation |
| actino-uranium | The (fissile) isotope of uranium of mass number 235. | 1918 | Go To Quotation |
| additivity | The condition or property of being additive. | 1904 | Go To Quotation |
| adeno-associated | Designating any of a group of parvoviruses which are dependent upon a helper virus… | 1965 | Go To Quotation |
| aerosolize | trans. To make into an aerosol, disperse as an aerosol. | 1944 | Go To Quotation |
| afterfeather | A secondary structure attached to the undersurface of the shaft of a contour… | 1937 | Go To Quotation |
| airflow | The flow of air; a current of air; spec. that encountered by the surface of an aircraft, vehicle, etc., in motion. | 1890 | Go To Quotation |
| allotypy | The occurrence of an immunoglobulin or other protein in genetically… | 1956 | Go To Quotation |
| angiotensin | A powerful vascoconstricting polypeptide which stimulates the production of… | 1958 | Go To Quotation |
| anticodon | A triplet of nucleotides forming a unit of genetic code in transfer RNA, which binds… | 1965 | Go To Quotation |
| anti-rabic | Having the property of counteracting the virus of rabies; curing, or relating to the cure of, rabies. | 1887 | Go To Quotation |
| araneology | The department of zoology relating to spiders. | 1884 | Go To Quotation |
| archibenthal | Belonging to or inhabiting the archiˈbenthos n. or depths of the primitive (palæozoic) ocean. | 1904 | Go To Quotation |
| archicortical | Relating to or located in the archicortex. | 1960 | Go To Quotation |
| Arctogaean | Of or belonging to the zoogeographical division Arctogaea. | 1885 | Go To Quotation |
| arthrodiran | = arthrodire n. | 1893 | Go To Quotation |
| art moderne | Modern art; spec. a streamlined style in applied art and architecture, popular esp. in the 1930s (freq. attrib.). | 1900 | Go To Quotation |
| asteroseismologist | An expert in or student of asteroseismology. | 1991 | Go To Quotation |
| astronautics | With sing. concord. The science and practice of space flight and human activity in… | 1928 | Go To Quotation |
| autohypnosis | The action, process, or technique of hypnotizing oneself; the state or condition… | 1889 | Go To Quotation |
| autoxidator | A substance which undergoes autoxidation; esp. an oxidized intermediate which causes further oxidation. | 1883 | Go To Quotation |
| bacitracin | An antibiotic obtained from organisms of the group Bacillus subtilis. | 1945 | Go To Quotation |
| ballon-sonde | A small balloon used to carry instruments for recording atmospheric conditions into… | 1898 | Go To Quotation |
| bioadhesive | An adhesive substance produced by or obtained from living organisms, or used on living, esp. mucosal, tissue. | 1967 | Go To Quotation |
| biochrome | A naturally occurring substance which imparts colour to the tissues of plants or animals. | 1944 | Go To Quotation |
| bioclastic | Designating or relating to sedimentary rock (esp. limestone) consisting of the… | 1903 | Go To Quotation |
| biodegrading | The action of biodegrade v. | 1970 | Go To Quotation |
| bioengineering | The application to biological processes of techniques derived from engineering; (also) the… | 1950 | Go To Quotation |
| biogeochemical | Of or relating to biogeochemistry; spec. designating the cycles in which chemical… | 1929 | Go To Quotation |
| bioinformatician | An expert in or practitioner of bioinformatics. | 1996 | Go To Quotation |
| bioinformaticist | = bioinformatician n. | 1994 | Go To Quotation |
| bioinorganic | Of or relating to both biology and inorganic chemistry; spec. designating… | 1970 | Go To Quotation |
| bioluminescence | The emission of light by living organisms such as fireflies, glow-worms, and many deep-sea creatures. Cf. phosphorescence n. | 1916 | Go To Quotation |
| bio-organic | Of or relating to organic compounds involved or produced in biological processes… | 1936 | Go To Quotation |
| bioplastic | A type of transparent plastic in which biological and palaeontological specimens can… | 1946 | Go To Quotation |
| bioprospecting | The action or process of searching for living organisms, (now) spec. for plant or… | 1964 | Go To Quotation |
| biosynthesized | Produced by biosynthesis; biosynthetic. | 1947 | Go To Quotation |
| biosystematics | With sing. concord. The classification of organisms using evidence from genetic… | 1943 | Go To Quotation |
| butyrolactone | In full gamma-butyrolactone. An oily liquid γ-lactone used as a solvent and sometimes… | 1883 | Go To Quotation |
| caption | trans. To provide with a caption, heading, or title; to entitle. | 1901 | Go To Quotation |
| chemostat | A device designed to provide a chemical environment that can be regulated and kept stable… | 1950 | Go To Quotation |
| chemosynthetic | Of, relating to, or characterized by chemosynthesis; chemotrophic. | 1898 | Go To Quotation |
| chemotaxonomically | From a chemotaxonomic point of view; as regards chemotaxonomy. | 1969 | Go To Quotation |
| chymotrypsin | A proteolytic enzyme secreted in the pancreatic juice as chymotrypsinogen n. and activated by trypsin. | 1933 | Go To Quotation |
| clavacin | A crystalline antibiotic substance produced in several fungi; spec. that obtained from Aspergillus clavatus. | 1942 | Go To Quotation |
| clo | A unit of thermal resistance used to express the insulating properties of clothing (see quots. 1941, 1986). Cf. tog n. 3. | 1941 | Go To Quotation |
| clonal | Or, relating to, or having the characteristics of a clone (in various senses); produced by cloning. | 1903 | Go To Quotation |
| clone | Bot. A population of genetically identical plants which have arisen from a single parent… | 1903 | Go To Quotation |
| cobalamin | A name given orig. to the characteristic part of the vitamin B 12 molecule (see quot.… | 1950 | Go To Quotation |
| cyanocobalamin | Vitamin B 12. | 1950 | Go To Quotation |
| decahydrate | A compound containing ten molecules of water of crystallization. | 1902 | Go To Quotation |
| deinstitutionalization | The process or action of removing (a person) from an institution, such as a mental… | 1974 | Go To Quotation |
| desiccate | A desiccated substance or product. | 1926 | Go To Quotation |
| diabasic | Of, pertaining to, or of the nature of diabase. | 1884 | Go To Quotation |
| docoglossate | Of or pertaining to the Docoglossa, a group of gastropod molluscs having transverse… | 1884 | Go To Quotation |
| dynein | A protein with ATPase activity that is responsible for the movement of cilia, flagella… | 1965 | Go To Quotation |
| echovirus | Any of a group of human enteroviruses which typically cause mild or asymptomatic infections. | 1955 | Go To Quotation |
| econometric | Of, relating to, or characterized by the application of statistical theory or methods to economic data. | 1931 | Go To Quotation |
| electroantennography | The recording of electrical activity in an insect's antenna; the making of electroantennograms. | 1973 | Go To Quotation |
| electro-osmotic | Of, relating to, or of the nature of electro-osmosis. | 1897 | Go To Quotation |
| electrotransfer | Chiefly Chem. The transfer of electrons. | 1968 | Go To Quotation |
| electrovalence | The property of forming chemical bonds by electrostatic attraction between positive… | 1921 | Go To Quotation |
| epistatic | Of, exhibiting, or caused by epistasis (sense 2). Const. to, on, over. (Opp. to hypostatic adj. 3.) | 1907 | Go To Quotation |
| epitrichium | A thin cellular membrane which overlies the epidermis and hair during fœtal life, usually disappearing before birth. | 1885 | Go To Quotation |
| Esperanto | An artificial language invented for universal use by Dr. Ludovik Lazarus Zamenhof… | 1892 | Go To Quotation |
| evo-devo | A branch of biology concerned with the interaction of evolutionary and developmental processes. | 1997 | Go To Quotation |
| exclusivity | = exclusiveness n., exclusivism n. | 1926 | Go To Quotation |
| fracture | intr. for refl. To suffer fracture; to break. | 1800 | Go To Quotation |
| free flight | The unrestrained flight of a balloon, glider, etc., that is not moored or being towed. | 1891 | Go To Quotation |
| fumigacin | = helvolic acid n. at helvolic adj. | 1942 | Go To Quotation |
| genomere | A (supposed) subunit of a gene. | 1927 | Go To Quotation |
| genomicist | A scientist who works in the field of genomics. | 1995 | Go To Quotation |
| genotype | Originally: a pure (inbred or true-breeding) line of an organism (disused). In later… | 1909 | Go To Quotation |
| genotypic | Of or relating to genotypes (genotype n.). Often contrasted with phenotypic. | 1909 | Go To Quotation |
| geomathematics | With sing. concord. The application of mathematical and computational techniques to geology; mathematical geology. | 1963 | Go To Quotation |
| geratology | The science of the phenomena of decadence, esp. those characteristic of a species or… | 1884 | Go To Quotation |
| Gnathostomulida | With pl. concord: a small phylum of minute acoelomate worms which typically occur in… | 1961 | Go To Quotation |
| gumbotil | A leached grey clay, very sticky when wet and very hard when dry, found extensively in Iowa and neighbouring states. | 1916 | Go To Quotation |
| Heidelberg | Used attrib. with reference to an extinct hominid, Homo heidelbergensis, first known from… | 1909 | Go To Quotation |
| heliothid | Belonging to or having the character of the Heliothidæ. | 1884 | Go To Quotation |
| hemisect | trans. To bisect, esp. longitudinally, or into the right and left halves. | 1885 | Go To Quotation |
| historiometry | The statistical analysis of historical data in order to make a quantitative… | 1909 | Go To Quotation |
| Hokan | Name given to a group of languages of certain American Indian peoples inhabiting the west… | 1913 | Go To Quotation |
| hydroxocobalamin | An analogue of cyanocobalamin (vitamin B 12) in which the cyanide ion is replaced by a hydroxide (OH−) ion. | 1950 | Go To Quotation |
| iconograph | A drawing, engraving, or illustration for a book: = icon n. 1. | 1884 | Go To Quotation |
| imbibitional | Of, pertaining to, or resulting from imbibition. | 1916 | Go To Quotation |
| immunization | Med. (and Biol.). The production of immunity in an organism; esp. inoculation… | 1889 | Go To Quotation |
| immunocytochemical | Combining immunological and cytochemical techniques; of or relating to immunocytochemistry. | 1956 | Go To Quotation |
| immunostimulant | An agent that stimulates the function of the immune system. | 1971 | Go To Quotation |
| immunosuppressant | = immunosuppressive adj. | 1964 | Go To Quotation |
| inhibin | A gonadal hormone which inhibits the secretion of follicle-stimulating hormone. | 1932 | Go To Quotation |
| insequent | Of a stream, stream valley, or drainage pattern: having a course or form that… | 1897 | Go To Quotation |
| internist | A general physician; also, a specialist in internal medicine. | 1904 | Go To Quotation |
| ionized | That has undergone ionization; containing ions. | 1896 | Go To Quotation |
| isogam | A line (imaginary or on a map) connecting points where the acceleration due to gravity has the same value. Freq. attrib. | 1928 | Go To Quotation |
| keatite | An artificial modification of silica produced at high pressures as tetragonal crystals. | 1954 | Go To Quotation |
| kelep | A Central American stinging ant, Ectatomma tuberculatum. | 1904 | Go To Quotation |
| Kennelly | Kennelly(– Heaviside) layer or region: = E-layer at E n. 10, Heaviside layer at Heaviside n. | 1925 | Go To Quotation |
| Kinorhyncha | With pl. concord: a small phylum of minute invertebrates that occur in marine mud… | 1897 | Go To Quotation |
| Kuiper belt | A region of the solar system located beyond the orbit of Neptune, between about 30… | 1988 | Go To Quotation |
| leprologist | An expert or specialist in the study or treatment of leprosy. | 1892 | Go To Quotation |
| macroplankton | Plankton that is relatively large; spec. macroscopic plankton. | 1903 | Go To Quotation |
| magcon | Any of several regions of the lunar surface where the magnetic field strength is anomalously high. | 1971 | Go To Quotation |
| magnetophone | A device which produces musical notes by means of a perforated iron disc that is rotated… | 1883 | Go To Quotation |
| magnetostatic | Of or relating to an unchanging magnetic field. | 1889 | Go To Quotation |
| magnetotactic | Exhibiting or characterized by magnetotaxis. | 1975 | Go To Quotation |
| malfunctioning | The action of malfunction v. | 1912 | Go To Quotation |
| malnourished | Suffering from malnutrition; not provided with adequate nourishment; undernourished. | 1911 | Go To Quotation |
| Mapharsen | An organic arsenical drug formerly given intravenously in the treatment of… | 1932 | Go To Quotation |
| Marek's disease | An infectious disease of poultry caused by a herpes virus, which results… | 1947 | Go To Quotation |
| mechanochemical | Of or relating to mechanochemistry; of or relating to mechanochemical phenomena. | 1943 | Go To Quotation |
| mechanosensitive | Responsive to mechanical stimuli; mechanoreceptive. | 1957 | Go To Quotation |
| mechanosensitivity | The state or quality of being mechanosensitive. | 1969 | Go To Quotation |
| megasporocyte | A cell in a plant ovule which divides to form megaspores. | 1924 | Go To Quotation |
| megavitamin | A large or concentrated dose of a vitamin. Freq. attrib., designating forms of therapy… | 1968 | Go To Quotation |
| meitnerium | A radioactive transuranic chemical element, atomic number 109, produced artificially. Symbol Mt. | 1992 | Go To Quotation |
| Mendelism | The fundamental principles of inheritance (especially the laws of segregation… | 1903 | Go To Quotation |
| Mendelist | = Mendelian n. | 1906 | Go To Quotation |
| Mendelize | intr. To behave or be inherited in accordance with Mendelian principles. | 1903 | Go To Quotation |
| merostomatous | Relating to or characteristic of the arthropod class Merostomata, of which the horseshoe… | 1885 | Go To Quotation |
| mesal | = medial adj. 2b. Cf. mesial adj. | 1881 | Go To Quotation |
| mesenchymal | Of or relating to mesenchyme; of the nature of or derived from mesenchyme. | 1883 | Go To Quotation |
| mesophase | Cell Biol. A stage in cell division: (a) a point of arrest during the metaphase of meiosis; (b)… | 1908 | Go To Quotation |
| mesophytic | Of, relating to, or of the nature of a mesophyte; characterized by the presence of mesophytes. | 1897 | Go To Quotation |
| mesosomal | Of or relating to a bacterial mesosome. | 1964 | Go To Quotation |
| metabiology | Originally: the study of philosophical questions which arise from or relate… | 1906 | Go To Quotation |
| metallizer | A thing that metallizes; spec. (a) a machine or plant for metallizing something; (b) a… | 1958 | Go To Quotation |
| metallo-organic | = organometallic adj. | 1884 | Go To Quotation |
| metarhodopsin | Any of three intermediates formed during the photolysis of the visual pigment rhodopsin. | 1950 | Go To Quotation |
| methacholine | A choline derivative with parasympathomimetic activity that can induce… | 1948 | Go To Quotation |
| methanation | Conversion (usually of carbon monoxide and hydrogen) into methane; an instance of this. | 1955 | Go To Quotation |
| methylmalonate | An anion, or an ester or salt, of methylmalonic acid. | 1908 | Go To Quotation |
| methyltransferase | Any of a class of enzymes that catalyse the transfer of methyl groups between molecules. | 1959 | Go To Quotation |
| microaerophile | A microorganism that requires less oxygen than that of the atmosphere for optimal growth. | 1903 | Go To Quotation |
| microbe | An extremely small living organism, a microorganism; esp. a bacterium causing disease or fermentation. Also in extended use. | 1880 | Go To Quotation |
| microbiological | Of or relating to microbiology. | 1880 | Go To Quotation |
| microbion | = microbe n. Usu. in pl. | 1883 | Go To Quotation |
| microbore | Of a pipe: having a very narrow bore. Of equipment, esp. a central heating system: incorporating such pipes. | 1967 | Go To Quotation |
| microchemist | An expert in or student of microchemistry. | 1908 | Go To Quotation |
| microchip | An integrated circuit; a microprocessor; (also) a tiny wafer of semiconducting material… | 1969 | Go To Quotation |
| micrococcal | Of, relating to, or caused by a micrococcus. | 1881 | Go To Quotation |
| microdontic | Having or designating small teeth; exhibiting or affected by microdontia. | 1903 | Go To Quotation |
| microfibrillar | Composed of microfibrils. | 1939 | Go To Quotation |
| microfocus | Capable of being focused on a very small area; spec. (of an X-ray tube or other… | 1951 | Go To Quotation |
| micro-image | A very small image, esp. one which can be viewed only by means of magnification; spec. a microphotograph. | 1954 | Go To Quotation |
| microinjection | Injection on a microscopic scale, esp. into an individual cell or part of a cell; an instance of this. | 1921 | Go To Quotation |
| micromanipulator | Any of various mechanical devices used to hold and control the movement of very… | 1921 | Go To Quotation |
| micrometeorite | A micrometeoroid; esp. one that has passed through the earth's atmosphere. | 1949 | Go To Quotation |
| micromodel | Chiefly Science. A device or apparatus adapted for dealing with small specimens; a… | 1941 | Go To Quotation |
| microperthite | A variety of perthite in which the lamellar structure is visible only under a microscope. | 1883 | Go To Quotation |
| microphotometric | Of, relating to, or involving microphotometry. | 1921 | Go To Quotation |
| micropinocytotic | Of, relating to, or characteristic of micropinocytosis. | 1969 | Go To Quotation |
| microtiter | Designating techniques or equipment used or designed for titration of small quantities of reagents, esp. in immunological tests. | 1961 | Go To Quotation |
| microvillar | = microvillous adj. | 1964 | Go To Quotation |
| microworld | The world viewed on a microscopic or subatomic scale; a small-scale theoretical or… | 1923 | Go To Quotation |
| milieu intérieur | The extracellular fluid forming the environment of cells in a multicellular organism… | 1913 | Go To Quotation |
| minerogenic | Derived from or containing minerals or mineral deposits. | 1947 | Go To Quotation |
| mischarged | Of a transfer RNA molecule: linked to an amino acid other than the one specific to it. | 1969 | Go To Quotation |
| misincorporated | Of a protein, etc.: that has been inserted by misincorporation. | 1965 | Go To Quotation |
| Mitanni | Of or relating to the people, language, or kingdom of Mitanni, a largely Hurrian kingdom… | 1898 | Go To Quotation |
| mitogenesis | The initiation of cell division. | 1957 | Go To Quotation |
| molecular clock | A clock based on the behaviour of individual molecules. | 1965 | Go To Quotation |
| Moloney | attrib. Designating either of two closely-related retroviruses that are oncogenic in mice… | 1963 | Go To Quotation |
| monobromated | = monobrominated adj. | 1880 | Go To Quotation |
| monodomous | Of a colony of social hymenoptera, esp. ants: occupying a single nest. Of a population… | 1905 | Go To Quotation |
| monohybrid | A hybrid that is heterozygous for a single trait or gene; esp. one having one dominant… | 1902 | Go To Quotation |
| monolayer | Science. A layer or film one molecule thick. | 1924 | Go To Quotation |
| monophote | Designating, supplying, or relating to a single arc lamp on a circuit. | 1881 | Go To Quotation |
| monophyly | The state of being monophyletic; shared descent from a common ancestor. Cf. monophylesis n.… | 1929 | Go To Quotation |
| monorhinic | = monorhinal adj. | 1892 | Go To Quotation |
| monotonal | Of music, speech, etc.: having little or no variety in tone or pitch. Of a person: speaking in a monotone. | 1939 | Go To Quotation |
| Morganist | Following the principles of genetics propounded by T. H. Morgan; supporting Morganism. | 1949 | Go To Quotation |
| multi-angle | Involving, using, or having more than one angle; performed or occurring at more than one angle. | 1959 | Go To Quotation |
| multi-coated | Covered with more than one layer or coating of a substance; (Photogr. and Optics)… | 1962 | Go To Quotation |
| multifocal | Having or relating to several foci or a range of focal lengths. | 1892 | Go To Quotation |
| multi-fuelled | = multi-fuel adj. | 1964 | Go To Quotation |
| multigenic | Controlled by or involving more than one gene; = polygenic adj. Cf. earlier multifactorial adj. | 1933 | Go To Quotation |
| multilamellated | = multilamellar adj. | 1969 | Go To Quotation |
| multilocularity | The condition of being multilocular. | 1967 | Go To Quotation |
| multimineral | Science. Involving or containing several different minerals. | 1977 | Go To Quotation |
| multi-pattern | Involving or having more than one pattern. | 1962 | Go To Quotation |
| multiple-choice | Designating a question which presents several possible answers from which one (occas.… | 1914 | Go To Quotation |
| multiplexed | Incorporated into a multiplex signal or system; subjected to the action of a multiplexer. | 1964 | Go To Quotation |
| multiroomed | Occupying or having more than one room. Also fig. | 1968 | Go To Quotation |
| multistrand | = multistranded adj. | 1929 | Go To Quotation |
| multiwell | Biol. Of a sample plate: having a number of wells. | 1962 | Go To Quotation |
| muscle tone | A sound produced by or attributed to the contraction of a muscle. Cf. muscular sound n. at muscular adj. Special uses. Now hist. | 1884 | Go To Quotation |
| muscoid | Relating to or designating dipteran flies of the section Schizophora (suborder Cyclorrhapha)… | 1911 | Go To Quotation |
| museology | The science or practice of organizing and managing museums; museum curation. Cf. museography n. | 1885 | Go To Quotation |
| mutagenicity | The property of being mutagenic; the degree to which something is mutagenic. | 1947 | Go To Quotation |
| mutationist | An advocate of mutation theory; a person who believes that evolution is caused… | 1903 | Go To Quotation |
| mutillid | Any of various solitary fossorial parasitic wasps constituting the family Mutillidae; a velvet ant. | 1895 | Go To Quotation |
| mycoplasmology | The scientific study of mycoplasmas. | 1965 | Go To Quotation |
| mycorrhizal | Of the nature of or relating to a mycorrhiza; associated with mycorrhizas. | 1900 | Go To Quotation |
| myelographic | Of, relating to, or obtained by myelography. | 1928 | Go To Quotation |
| myelopoietic | Of, relating to, or involved in myelopoiesis. | 1964 | Go To Quotation |
| myofibre | A muscle fibre. Cf. myofibril n. | 1965 | Go To Quotation |
| myofibroblast | A fibroblast showing some morphological and functional characteristics of a smooth muscle cell; a contractile fibroblast. | 1971 | Go To Quotation |
| myrmecophytism | Myrmecophily (in a plant); the condition of living in a symbiotic relationship with ants. | 1920 | Go To Quotation |
| nanomole | One thousand-millionth of a mole (mole n.). Abbreviated nmol. | 1964 | Go To Quotation |
| nanovolt | One thousand-millionth of a volt. Abbreviated nV. | 1964 | Go To Quotation |
| narrowback | Physical Anthropol. In racial classification: a slimly built person of tall stature. Now disused. | 1921 | Go To Quotation |
| natriuretic | Causing or relating to natriuresis. | 1953 | Go To Quotation |
| negentropic | Of or relating to negentropy; causing or accompanied by a decrease in entropy or an… | 1964 | Go To Quotation |
| negligibly | To a negligible extent or degree. | 1884 | Go To Quotation |
| Nematodirus | A genus of nematode worms (family Trichostrongylidae) which are intestinal parasites… | 1911 | Go To Quotation |
| neo-behaviourist | A proponent or supporter of a modified or revived form of behaviourism. | 1941 | Go To Quotation |
| neomycin | An aminoglycoside antibiotic which is produced by a strain of Streptomyces fradiae and is… | 1949 | Go To Quotation |
| nepheline-syenite | A plutonic rock which resembles syenite in being composed of alkali feldspars and… | 1885 | Go To Quotation |
| nephelinization | The alteration of a rock to one in which nepheline is a significant constituent. | 1943 | Go To Quotation |
| neuritic | Of or relating to a neurite or neurites. | 1967 | Go To Quotation |
| neurobiochemistry | The biochemistry of neural processes or structures; the branch of science dealing with this. | 1958 | Go To Quotation |
| neurobiological | Of or relating to neurobiology. | 1905 | Go To Quotation |
| neurochemistry | The chemistry of neural processes or structures. | 1945 | Go To Quotation |
| neuroembryology | The embryology of the nervous system; the branch of science dealing with this. | 1933 | Go To Quotation |
| neurogeneticist | An expert or specialist in neurogenetics. | 1975 | Go To Quotation |
| neurohistologic | = neurohistological adj. | 1940 | Go To Quotation |
| neurologic | = neurological adj. | 1896 | Go To Quotation |
| neuropharmacological | Of or relating to the action of drugs on the nervous system, or to the branch… | 1953 | Go To Quotation |
| neurophysiologically | As regards neurophysiology; in terms of neurophysiology; by neurophysiological means. | 1951 | Go To Quotation |
| neuroregulator | An endogenous neuroactive substance (neurotransmitter, neuromodulator, etc.) involved… | 1970 | Go To Quotation |
| neuroregulatory | Having a regulatory effect on neuronal function or neural activity; of or relating to such an effect. | 1962 | Go To Quotation |
| neurotrophic | Of, relating to, or designating the neural control of the growth, maintenance, or activity of tissues or cells. | 1887 | Go To Quotation |
| New Frontiersman | A person working at a new frontier; spec. a proponent of President Kennedy's New Frontier programme (see new frontier n. 2b). | 1923 | Go To Quotation |
| Newton–Raphson | attrib. Designating an iterative method for finding a numerical solution to an equation in… | 1910 | Go To Quotation |
| n-gram | A sequence of n letters or characters (where n is a variable: see N n. 6a 6b), esp.… | 1963 | Go To Quotation |
| nigrosine | Any of various dark blue or blackish aniline compounds used in dyes, inks, and leather polishes, and as biological stains. | 1881 | Go To Quotation |
| nitrating | attrib. Designating a substance or agent used in or capable of bringing about the nitration of other substances. | 1907 | Go To Quotation |
| noble gas | Each of the elements helium, neon, argon, krypton, xenon, and radon, all of which… | 1901 | Go To Quotation |
| noctilucence | Marine bioluminescence; (later also) luminescence at night or in the dark. | 1893 | Go To Quotation |
| non-acidic | = non-acid adj. | 1907 | Go To Quotation |
| non-adaptively | Not adaptively; in a non-adaptive manner. | 1910 | Go To Quotation |
| non-ambiguity | The state of not being ambiguous. | 1933 | Go To Quotation |
| non-barbiturate | Of a drug: that is not a barbiturate. | 1963 | Go To Quotation |
| non-cellulosic | Not containing or derived from cellulose. | 1930 | Go To Quotation |
| non-clinical | Not characterized by or involving direct contact with patients. | 1902 | Go To Quotation |
| non-directive | = non-directional adj. | 1898 | Go To Quotation |
| non-flammable | Not flammable, not likely to catch fire. | 1898 | Go To Quotation |
| non-ionic | Not ionic; spec. (esp. of a detergent) not dissociating into ions in aqueous solution. | 1896 | Go To Quotation |
| non-locality | The condition, state, or attribute of being non-local, esp. (Math. and Physics) in quantum phenomena (cf. non-local adj. 2). | 1953 | Go To Quotation |
| non-objectivity | Philos. The quality or condition of not being objective. | 1884 | Go To Quotation |
| non-pathogen | An organism or other agent that is non-pathogenic. | 1937 | Go To Quotation |
| non-planarity | The quality or condition of being non-planar. | 1945 | Go To Quotation |
| non-solid | Not solid (lit. and fig.). | 1887 | Go To Quotation |
| non-surgical | Of a disorder: not requiring surgery; (of a disorder or a patient) not customarily treated surgically. Cf. medical adj. 1b. | 1888 | Go To Quotation |
| normed | That has been normalized; (Math.) = normal adj. 12 (now rare). Cf. norm v. 1. | 1906 | Go To Quotation |
| Nothofagus | A genus of evergreen or deciduous trees of the family Fagaceae, allied to the beech but… | 1896 | Go To Quotation |
| notonectid | A predatory aquatic bug of the family Notonectidae; a backswimmer. Cf. Notonecta n. | 1908 | Go To Quotation |
| nouniness | The (excessive) use of nouns or nominal constructions. Also (Linguistics): the state or condition of being noun-like. | 1969 | Go To Quotation |
| Novachord | An electronic keyboard instrument spanning six octaves. | 1939 | Go To Quotation |
| nucleophile | A nucleophilic substance or molecule. | 1952 | Go To Quotation |
| nukespeak | Euphemistic language used to allay public fear or suspicion of nuclear technology or nuclear war. | 1979 | Go To Quotation |
| numerus clausus | A fixed (maximum) number of entrants admissible to an academic institution. Also… | 1886 | Go To Quotation |
| objectly | = objectively adv. | 1920 | Go To Quotation |
| obligately | Out of necessity; through restriction to such a mode of life or such environmental conditions. Cf. obligate adj. 2. | 1915 | Go To Quotation |
| oceanographic | Of or relating to oceanography. | 1891 | Go To Quotation |
| octanoyl | The acyl radical —C(O)(CH 2) 6 CH 3 (also called caprylyl). Usu. attrib. | 1941 | Go To Quotation |
| octocoral | = octocorallian n. | 1936 | Go To Quotation |
| oestrogenized | Treated with oestrogen; subjected to the effect of oestrogen. | 1944 | Go To Quotation |
| off-road | That is off a road; not located or done on a road (now freq. with reference to the sport… | 1954 | Go To Quotation |
| oleophobic | Tending to repel, or not to absorb, oils or oily materials. | 1938 | Go To Quotation |
| oligotrophication | The process of becoming oligotrophic. | 1973 | Go To Quotation |
| on-board | That is on board a ship, aircraft, spacecraft, etc. | 1958 | Go To Quotation |
| oncogenic | Causing or initiating the development of a tumour or tumours; of or relating to oncogenesis. | 1941 | Go To Quotation |
| oncornaviral | Derived from or relating to an oncornavirus. | 1972 | Go To Quotation |
| ontogenically | = ontogenetically adv. | 1888 | Go To Quotation |
| ontologizing | The action of ontologize v.; an instance of this. | 1886 | Go To Quotation |
| opsin | Any of a group of glycoproteins which are combined with retinal in rhodopsin and… | 1951 | Go To Quotation |
| opsonization | The process of opsonizing foreign cells or cell components. | 1907 | Go To Quotation |
| organophosphate | Any organic compound whose molecule contains one or more phosphate ester groups, esp. any… | 1945 | Go To Quotation |
| organotherapeutics | = organotherapy n. | 1899 | Go To Quotation |
| ornithomimid | Of, relating to, or designating dinosaurs of the theropod family Ornithomimidae of… | 1919 | Go To Quotation |
| Ornithomimus | A genus of small bipedal theropod dinosaurs of the late Cretaceous period, with… | 1896 | Go To Quotation |
| orogenic | Of or relating to orogenesis; connected with, characterized by, or resulting from the formation of mountains. | 1885 | Go To Quotation |
| orthogenetically | Biol. In an orthogenetic manner; according to the principles of orthogenesis. | 1907 | Go To Quotation |
| orthogenic | Biol. = orthogenetic adj. | 1896 | Go To Quotation |
| orthomolecular | Designating or relating to a form of treatment, esp. of mental disorders, that seeks… | 1968 | Go To Quotation |
| orthoplasy | J. M. Baldwin's term for: the retention and transmission by an organism… | 1897 | Go To Quotation |
| orthopsychiatry | A school or movement within psychiatry concerned with the development and prevention… | 1929 | Go To Quotation |
| oscillography | The use of oscillographs. | 1929 | Go To Quotation |
| oscilloscopic | Of or relating to an oscilloscope. | 1938 | Go To Quotation |
| osmolarity | The osmolar concentration of a solution. Cf. osmolality n. | 1948 | Go To Quotation |
| osteodystrophia fibrosa | = osteitis fibrosa n. | 1928 | Go To Quotation |
| Otomian | A group of related central Mexican languages, including Otomi and Mazahua, belonging… | 1900 | Go To Quotation |
| outpocketing | An outward growth or movement of part of a surface so as to form a pocket-like or sac-like cavity; the cavity so formed. | 1900 | Go To Quotation |
| outseg | trans. To support or advocate a more segregationist policy than (another person). | 1963 | Go To Quotation |
| overdeepened | Of a valley: eroded more deeply by glacial action than would occur by water erosion alone. Cf. oversteepened adj. | 1900 | Go To Quotation |
| overdischarge | trans. (refl.) and intr. To discharge stored electrical charge to such an extent as… | 1890 | Go To Quotation |
| overdispersed | Spread out to a greater degree or more evenly scattered than usual or expected… | 1931 | Go To Quotation |
| overdosage | The administering or taking of too large a dose (of medicine, a drug, etc.); (also occas.) an instance of this. | 1887 | Go To Quotation |
| over-exploit | trans. To exploit excessively; spec. to exploit (a natural resource) too quickly or to too great an extent. | 1899 | Go To Quotation |
| over-exploitation | Excessive exploitation; spec. overuse of natural resources. | 1916 | Go To Quotation |
| overflying | The action of overfly v. | 1947 | Go To Quotation |
| overfunded | Having more funding than is necessary or permitted. | 1964 | Go To Quotation |
| overmaturity | The condition which results from passing beyond the mature state; the state of being overmature. | 1889 | Go To Quotation |
| overspray | Sprayed paint, varnish, etc., which lands outside the intended area, or which does not adhere to the object being sprayed. | 1942 | Go To Quotation |
| oversteepening | The increasing of a slope to a steepness greater than is normal or stable; esp. the formation… | 1901 | Go To Quotation |
| overwash | The action or process of washing over; (Physical Geogr.) (a) the deposition over or… | 1886 | Go To Quotation |
| overwater | Operating, performed, or taking place above or across water. Also: located on, over, or above water. | 1889 | Go To Quotation |
| ovogonium | = oogonium n. 2. | 1906 | Go To Quotation |
| oxime | Any organic compound containing the group N(OH) attached to a carbon atom, formed by… | 1883 | Go To Quotation |
| PABA | = para-aminobenzoic acid n. at para-aminobenzoic adj. | 1943 | Go To Quotation |
| palaeobiologic | = palaeobiological adj. | 1924 | Go To Quotation |
| palaeoecologist | An expert in or student of palaeoecology. | 1917 | Go To Quotation |
| palaeoentomology | The study of extinct and fossil insects. Also: the study of the remains of insects preserved in archaeological sites. | 1911 | Go To Quotation |
| palaeoichthyologist | A palaeontologist who specializes in extinct and fossil fishes. | 1884 | Go To Quotation |
| palaeozoologist | An expert in or student of palaeozoology. | 1897 | Go To Quotation |
| paludism | Malaria, esp. as formerly thought to be caused by noxious marsh gases. | 1888 | Go To Quotation |
| palynologically | By means of palynology; from the point of view of palynology. | 1955 | Go To Quotation |
| panmixis | Random mating within a population (= panmixia n. 2). Also: (rare) a population within which this occurs (= panmixia n. 3). | 1943 | Go To Quotation |
| papovavirus | Any member of a group of viruses (usually regarded as the family Papovaviridae)… | 1962 | Go To Quotation |
| parablastic | Of or relating to the parablast (parablast n. 2). | 1883 | Go To Quotation |
| Paranthropus | A fossil hominid of the genus Paranthropus, known from remains found in southern… | 1938 | Go To Quotation |
| parapatagium | A fold of skin between the neck and shoulder of a bird. | 1887 | Go To Quotation |
| parapsychological | Of an intellectual system: fanciful. Obs. nonce-use. | 1887 | Go To Quotation |
| parapsychology | The development of fanciful intellectual systems. Obs. nonce-use. | 1887 | Go To Quotation |
| parascientist | A student or practitioner of parascience. | 1965 | Go To Quotation |
| parasitization | Attack or infestation by a parasite. | 1909 | Go To Quotation |
| parenterally | by a parenteral route. | 1909 | Go To Quotation |
| parfocality | The property of being parfocal. | 1955 | Go To Quotation |
| parfocalize | trans. To make (lenses or a lens system) parfocal. | 1921 | Go To Quotation |
| parthenocarpy | The development of a (usually seedless) fruit without prior fertilization or pollination. | 1906 | Go To Quotation |
| pastillage | Archaeol. A form of decoration in which additional pieces of the modelling material… | 1883 | Go To Quotation |
| pathobiological | Of or relating to the study of pathogenic organisms. Obs. rare. | 1887 | Go To Quotation |
| pathophysiologic | = pathophysiological adj. | 1947 | Go To Quotation |
| patrocliny | Patroclinous inheritance. | 1916 | Go To Quotation |
| Pearson | Designating or relating to a correlation coefficient calculated from the product moment… | 1903 | Go To Quotation |
| pecoraite | A rare, bright green, monoclinic mineral of the serpentine group, consisting of a… | 1969 | Go To Quotation |
| pectinicorn | A beetle of the former group or section Pectinicornia (or Pectinicornes), comprising… | 1883 | Go To Quotation |
| pectinolytic | = pectolytic adj. | 1957 | Go To Quotation |
| peneplain | trans. To erode to a peneplain. | 1896 | Go To Quotation |
| penicilloic | any of a group of acids which are dicarboxylic acid derivatives of thiazolidine and… | 1945 | Go To Quotation |
| pentalogy | A combination of five mutually connected parts; a pentad. | 1899 | Go To Quotation |
| peptidic | Of, relating to, or of the nature of a peptide. | 1942 | Go To Quotation |
| peptidomimetic | A biologically active compound, esp. a manufactured one, that resembles a natural peptide such as a cytokine or chemokine. | 1987 | Go To Quotation |
| peptogenic | Stimulating the formation of pepsin. Later also: having the quality of hydrolysing protein into soluble form (peptone). | 1886 | Go To Quotation |
| peptonize | trans. To make (a protein) soluble by partial predigestion or hydrolysis, esp. in the… | 1880 | Go To Quotation |
| Permo-Trias | = Permo-Triassic adj. n. | 1897 | Go To Quotation |
| peronium | In certain hydromedusae: a tentacle formed by an extension of the umbrellar ectoderm and lacking mesogloea. Usu. in pl. | 1880 | Go To Quotation |
| perosis | A deformity of the leg in poultry involving dislocation of the gastrocnemius tendon, thought… | 1931 | Go To Quotation |
| peroxidase | Any of a large class of iron-containing enzymes which catalyse the oxidation of a substrate… | 1899 | Go To Quotation |
| peroxidate | A product of oxidation by a peroxide; (spec. in Biochem.) a product of the peroxidation of a lipid. | 1909 | Go To Quotation |
| phagocytable | Capable of being phagocytosed. | 1909 | Go To Quotation |
| phalloidin | A toxic alkaloid obtained from the toadstool Amanita phalloides; (now) spec.… | 1909 | Go To Quotation |
| phaneritic | Of an igneous rock: containing macroscopic mineral grains. Cf. phanerite n. | 1914 | Go To Quotation |
| pharmacognosist | An expert or specialist in pharmacognosy. | 1911 | Go To Quotation |
| phenetics | Phenetic taxonomy; the systematics of phenotypes. | 1963 | Go To Quotation |
| phenolate | = phenoxide n. | 1883 | Go To Quotation |
| phenologic | = phenological adj. | 1888 | Go To Quotation |
| philoprogeneity | Love of one's progeny or offspring; = philoprogenitiveness n. 1. | 1888 | Go To Quotation |
| phoniatrician | An expert or specialist in phoniatrics. | 1938 | Go To Quotation |
| phoniatry | = phoniatrics n. | 1941 | Go To Quotation |
| phoroscope | L. Weiller's name for: a device for transmitting a picture along a wire by means… | 1889 | Go To Quotation |
| phosphoenolpyruvate | The anion CH 2 =C(OPO(OH) 2)COO −, or a compound containing this, the conversion of… | 1941 | Go To Quotation |
| photoautotrophy | Photoautotrophic nutrition; the condition of being a photoautotroph. | 1961 | Go To Quotation |
| photochromic | Undergoing a change of colour or shade when illuminated; spec. of, relating to, or exhibiting photochromism. | 1881 | Go To Quotation |
| photochromics | The branch of technology that deals with photochromic substances and their applications. | 1962 | Go To Quotation |
| photocoagulator | An apparatus which produces the light beam used for photocoagulation. | 1965 | Go To Quotation |
| photoconducting | Exhibiting or utilizing a decrease in electrical resistance on illumination. | 1924 | Go To Quotation |
| photoconductivity | The property of being photoconducting; the degree to which something is photoconductin. | 1924 | Go To Quotation |
| photodegrade | trans. To degrade by the action of light; to subject to photodegradation. | 1971 | Go To Quotation |
| photoduplicating | = photoduplication n. Usu. attrib. | 1922 | Go To Quotation |
| photo-epinasty | Epinasty supposed to occur as a result of exposure to bright light. Cf. photo-hyponasty n. | 1883 | Go To Quotation |
| photoion | An ion resulting from photoionization. | 1926 | Go To Quotation |
| photomask | A photographic pattern through which a photoresist or photoreactive material is… | 1963 | Go To Quotation |
| photomicrographer | A person who takes photomicrographs. | 1885 | Go To Quotation |
| photophysics | The branch of science that deals with physical properties as affected by light and the physical effects of light. | 1909 | Go To Quotation |
| photoreception | The absorption or detection of light by an animal or plant, esp. as a sensory stimulus. | 1902 | Go To Quotation |
| photoreduced | That has been photochemically reduced. | 1952 | Go To Quotation |
| photoregulation | The regulation of a biological or chemical process by means of the intensity, duration, etc., of light. | 1968 | Go To Quotation |
| photorespire | intr. To carry out photorespiration. | 1969 | Go To Quotation |
| photoresponsive | Responsive to light. | 1926 | Go To Quotation |
| photostimulatory | Relating to or involving photostimulation. | 1975 | Go To Quotation |
| photosynthetic | Of, relating to, involved in photosynthesis; produced by photosynthesis; (of an organism) capable of photosynthesis. | 1897 | Go To Quotation |
| physiogenetic | Of, relating to, or involving both physiology and genetics; of or relating to genetically determined differences in physiology. | 1950 | Go To Quotation |
| physogastric | Exhibiting physogastry. | 1911 | Go To Quotation |
| phytoagglutinin | Any plant protein that acts as an agglutinin; a lectin. | 1956 | Go To Quotation |
| phytochemically | As regards phytochemistry; by phytochemical methods. | 1969 | Go To Quotation |
| phytoflagellate | A flagellate (protist) belonging to any of several groups of unicellular organisms… | 1902 | Go To Quotation |
| pinch effect | Physics. The constriction exhibited by a fluid through which a large electric current… | 1909 | Go To Quotation |
| pipettor | An instrument that allows remote operation of a pipette, usually by the attachment of… | 1942 | Go To Quotation |
| pixel | Each of the minute areas of uniform illumination of which the image on a… | 1969 | Go To Quotation |
| placentoid | Resembling a placenta, or placental tissue. | 1885 | Go To Quotation |
| placode | A localized thickening of the ectoderm in a vertebrate embryo which contributes to… | 1907 | Go To Quotation |
| plagiotropy | = plagiotropism n. | 1898 | Go To Quotation |
| planktont | = plankter n. | 1897 | Go To Quotation |
| plasmolytically | By means of plasmolysis. | 1903 | Go To Quotation |
| plasterboard | A lightweight building board made of plaster with a reinforcing or strengthening… | 1891 | Go To Quotation |
| plasticized | Made (more) plastic or mouldable, esp. by treatment with a plasticizer or by a process of plastication. | 1937 | Go To Quotation |
| plastidome | The plastids of a cell collectively. | 1926 | Go To Quotation |
| plastin | A kind of protein found principally in the cytoskeleton and also associated with chromatin in the cell nucleus. | 1883 | Go To Quotation |
| plate tectonics | With sing. concord. A theory in which the interactions of moving lithospheric plates (plate n.… | 1969 | Go To Quotation |
| platypussary | An enclosure or building in which platypuses are kept, esp. under conditions simulating those in which they live in the wild. | 1938 | Go To Quotation |
| plesiadapid | A primitive primate belonging to the extinct family Plesiadapidae, known from… | 1930 | Go To Quotation |
| Plesianthropus | An African fossil hominid of the former genus Plesianthropus, described from remains found… | 1938 | Go To Quotation |
| plessite | An inhomogeneous mixture of kamacite and taenite found in some iron meteorites. | 1885 | Go To Quotation |
| pneumotach | A pneumotachograph. | 1961 | Go To Quotation |
| pnictide | A compound of a pnicogen with one or more elements or radicals of greater electropositivity. | 1966 | Go To Quotation |
| pollinator | An insect or other agent that pollinates a plant. Also: a plant or cultivar that… | 1883 | Go To Quotation |
| polydeoxynucleotide | A polymer of a deoxyribonucleotide. Cf. polydeoxyribonucleotide n. | 1960 | Go To Quotation |
| polyhedrosis | A fatal disease of caterpillars characterized by the presence of polyhedral virus particles. | 1947 | Go To Quotation |
| polyodont | Originally: †= polyodontid adj. (obs.). Later more generally: having many teeth. | 1885 | Go To Quotation |
| polyoma | = polyomavirus n. Freq. attrib. | 1958 | Go To Quotation |
| polysome | Cell Biol. A cluster of ribosomes held together by a strand of messenger RNA which each… | 1962 | Go To Quotation |
| polystachyous | Having many ears or spikes, as a grass. | 1821 | Go To Quotation |
| polywater | A supposed polymeric form of water having properties markedly different from those… | 1969 | Go To Quotation |
| poroscope | An instrument for measuring the degree of porosity. | 1893 | Go To Quotation |
| Porro prism | A reflecting prism in which light enters through the hypotenuse and is reflected… | 1909 | Go To Quotation |
| post-accelerator | A device for post-accelerating an electron or electron beam in a cathode ray tube. | 1950 | Go To Quotation |
| postfixation | Biol. Occurring, performed, or used after the fixation of tissue. | 1935 | Go To Quotation |
| poxvirus | Originally: the causative agent of cowpox or smallpox. In later use: spec. any member of… | 1891 | Go To Quotation |
| prealbumin | Any plasma protein with an electrophoretic mobility which (in some techniques… | 1953 | Go To Quotation |
| prebiotic | = prebiological adj. | 1954 | Go To Quotation |
| preformism | = preformationism n. | 1895 | Go To Quotation |
| prelacteal | Zool. Of or designating certain vestigial, embryonic toothlike structures occurring in the… | 1895 | Go To Quotation |
| pre-man | A hominid or manlike creature that lived before the appearance of true human beings; an evolutionary precursor of human beings. | 1903 | Go To Quotation |
| pre-professional | Prior or preliminary to professional training. | 1909 | Go To Quotation |
| prepupa | An insect in a late stage of its larval development, during a relatively quiescent phase… | 1902 | Go To Quotation |
| prescriptorial | Existing before the use of writing. | 1896 | Go To Quotation |
| presexual | Preceding or not yet influenced by sexual activity, awareness, or development; prepubertal. | 1915 | Go To Quotation |
| presoaking | The soaking of something as a preliminary process or treatment; spec. the soaking of laundry before washing. | 1919 | Go To Quotation |
| probit | The unit which forms the scale into which percentages may be transformed so that… | 1934 | Go To Quotation |
| processability | The capacity to be processed. | 1941 | Go To Quotation |
| proctotrupoid | Of, relating to, or designating a wasp of the superfamily Proctotrupoidea… | 1903 | Go To Quotation |
| propatagial | Of or relating to a propatagium; esp. designating or relating to certain muscles and… | 1887 | Go To Quotation |
| properdin | Any of a group of proteins found in the blood and involved in the alternative pathway of complement activation. | 1954 | Go To Quotation |
| protoctist | An organism of the kingdom Protoctista; a eukaryote which is not an animal or a plant (or, in most schemes, a fungus). | 1968 | Go To Quotation |
| protologue | The type description of a species, genus, etc. In later use: spec. the full… | 1905 | Go To Quotation |
| protoplanet | A large diffuse body of matter in the process of accretion in orbit around the sun or… | 1948 | Go To Quotation |
| protopod | Zool. = protopodite n. | 1883 | Go To Quotation |
| Protura | With pl. concord. An order of minute, primitive, wingless insects with slender whitish… | 1915 | Go To Quotation |
| provirus | The genetic material of a DNA or RNA virus as incorporated into, and able to replicate with, the genome of a host cell. | 1950 | Go To Quotation |
| psychist | A person who believes in or researches into psychic phenomena. | 1884 | Go To Quotation |
| psychobiographer | A writer of psychobiography. | 1934 | Go To Quotation |
| psychoendocrinology | The branch of science that deals with the relationship between the endocrine system and… | 1928 | Go To Quotation |
| psychogeography | The study of the influence of geographical environment on the mind, behaviour… | 1905 | Go To Quotation |
| psychomimetic | = psychotomimetic adj. | 1957 | Go To Quotation |
| psychoneuroimmunology | A branch of science concerned with the relationships between the mind and emotions… | 1980 | Go To Quotation |
| psychoneurological | = neuropsychological adj. | 1908 | Go To Quotation |
| psychopathological | Of or relating to psychopathology; psychiatric; mentally unhealthy. | 1884 | Go To Quotation |
| psychotechnic | = psychotechnical adj. | 1913 | Go To Quotation |
| psychotogen | A psychotomimetic substance. | 1957 | Go To Quotation |
| pteroic | a crystalline acid whose tricyclic molecule is the basis of the structures of… | 1946 | Go To Quotation |
| pteroyl | An acyl radical derived from pteroic acid. Usu. attrib. and as a formative element… | 1946 | Go To Quotation |
| pteroylglutamic | any of a series of derivatives of pteroic acid which have a side chain consisting of one… | 1946 | Go To Quotation |
| quantasome | Originally: any of numerous granular structures seen by electron microscopy in… | 1962 | Go To Quotation |
| radiational | Of, relating to, or involving radiation. | 1899 | Go To Quotation |
| radioactivating | That makes something radioactive. | 1946 | Go To Quotation |
| radioactively | By radioactive decay; with radioactive material; by means of a process or technique dependent upon radioactivity. | 1904 | Go To Quotation |
| radioassay | trans. To perform a radioassay on. | 1952 | Go To Quotation |
| radiocolloidal | Of the nature of a radiocolloid; of or relating to a radiocolloid. | 1925 | Go To Quotation |
| radio energy | Energy transmitted in the form of radio waves. | 1919 | Go To Quotation |
| radiography | The process by which radiographs are made; the use of radiographs as an investigative… | 1896 | Go To Quotation |
| radioisotopic | Of or relating to radioisotopes; involving radioisotopes. | 1949 | Go To Quotation |
| radiophysicist | An expert or specialist in radiophysics (radiophysics n.). | 1911 | Go To Quotation |
| radio tagging | The use of radio tags (radio tag n.), esp. to track animals. | 1978 | Go To Quotation |
| Ranalian | Of or relating to the (former) order Ranales, comprising dicotyledonous families… | 1909 | Go To Quotation |
| rebreather | A closed-circuit breathing apparatus in which exhaled air is partially purified of… | 1920 | Go To Quotation |
| recalibration | The process or action of recalibrating an instrument or device. Also in extended use (cf. recalibrate v.). | 1889 | Go To Quotation |
| reflectometry | The use of a reflectometer; measurement of a quantity by means of a reflectometer. | 1920 | Go To Quotation |
| reorientation | The action or process of reorienting; a fresh orientation. | 1888 | Go To Quotation |
| resequent | A stream whose course follows the dip of strata (in the manner of a consequent stream) but is… | 1901 | Go To Quotation |
| retrovirus | Any member of the family Retroviridae of enveloped, single-stranded RNA viruses… | 1976 | Go To Quotation |
| ripa | B. G. Wilder's name for: a line of reflection (folding back) of the ependyma of the brain. | 1881 | Go To Quotation |
| Rossby | Used attrib. with reference to Rossby's work in the fields of fluid flow and meteorology. | 1935 | Go To Quotation |
| rutherfordium | An artificially produced transuranic chemical element, atomic number 104, produced… | 1969 | Go To Quotation |
| sebotrophic | Tending to stimulate sebaceous activity. | 1957 | Go To Quotation |
| Secchi | Secchi(' s) disc: a type of opaque white disc which is used in determining the… | 1913 | Go To Quotation |
| self-aligning | Capable of aligning itself automatically. Of a bearing or the like: having a degree of flexibility as regards alignment. | 1904 | Go To Quotation |
| silverite | An advocate of a silver monetary standard. | 1886 | Go To Quotation |
| sinoite | Silicon oxynitride, Si 2 N 2 O, found as colourless orthorhombic crystals in some chondritic meteorites. | 1964 | Go To Quotation |
| sirenian | Any member of the order Sirenia of fish-like aquatic mammals. | 1883 | Go To Quotation |
| socialry | Social organization. | 1896 | Go To Quotation |
| somatostatin | A peptide secreted in the hypothalamus and elsewhere whose actions include the inhibition… | 1973 | Go To Quotation |
| Soundex | Used, usu. attrib., with reference to a phonetic coding system intended to… | 1959 | Go To Quotation |
| speciation | The formation of new and distinct species in the course of evolution. | 1906 | Go To Quotation |
| spinthariscope | An instrument in which the rays emitted from the metal radium are evidenced by the production of tiny sparks. | 1903 | Go To Quotation |
| Stark | Used attrib. with reference to an effect observed by Stark (Sitzungsber. der k. Preuss. Akad. der… | 1914 | Go To Quotation |
| Steinheim | Used attrib. with reference to an extinct hominid known from a Middle Pleistocene… | 1935 | Go To Quotation |
| supercontinent | A postulated land mass containing all of the earth’s continental crust, or containing… | 1923 | Go To Quotation |
| supergranular | Of or relating to supergranulation. | 1965 | Go To Quotation |
| Taser | A weapon which fires barbs attached by wires to batteries, and causes temporary paralysis. | 1972 | Go To Quotation |
| tendinal | = tendinous adj. | 1887 | Go To Quotation |
| terrarium | A vivarium for land animals; esp. a glass case, or the like, in which small land animals are kept under scientific observation. | 1890 | Go To Quotation |
| theism | A morbid condition characterized by headache, sleeplessness, and palpitation of the heart, caused by excessive tea-drinking. | 1886 | Go To Quotation |
| tilorone | An aromatic amine which induces the production of interferon and acts as an anti-viral agent. | 1970 | Go To Quotation |
| Tongrian | Name for marine strata of the Lower Oligocene of Belgium. | 1883 | Go To Quotation |
| transgenic | Of an organism: containing genetic material into which DNA has been artificially… | 1981 | Go To Quotation |
| transpirometer | An apparatus for recording the amount of watery vapour transpired by a plant. | 1904 | Go To Quotation |
| troctolite | (See quot. 1892.) | 1883 | Go To Quotation |
| ultrathin | Extremely thin; spec. in Biol., applied to a section cut with an ultramicrotome. | 1949 | Go To Quotation |
| unemployment | (un- prefix 12) | 1888 | Go To Quotation |
| unfused | (un- prefix 9.) | 1885 | Go To Quotation |
| unglaciated | (un- prefix 8.) | 1883 | Go To Quotation |
| vacuome | The vacuoles of a cell collectively (see quot. 1976). | 1926 | Go To Quotation |
| vauxite | A secondary mineral that is a hydrated basic phosphate of aluminium and ferrous iron, Fe 2+ 2… | 1922 | Go To Quotation |
| voltammetry | An electroanalytical technique for establishing the identities and concentrations of various ions in solution (see quot. 1978). | 1940 | Go To Quotation |
| weddellite | A hydrated calcium oxalate, CaC 2 O 4.2H 2 O, which occurs as colourless tetragonal crystals and is common in calculi. | 1942 | Go To Quotation |
| Weismannian | Of or pertaining to Weismann or his biological theory. | 1903 | Go To Quotation |
| worriless | Free from worry. | 1889 | Go To Quotation |
