| acetoxy | Designating the group or radical —OCOCH 3; containing this group or radical. | 1912 | Go To Quotation |
| acetylate | trans. To introduce an acetyl group into (a molecule or compound). | 1885 | Go To Quotation |
| acetylated | Of a compound, molecule, etc.: containing an added acetyl group, having an acetyl group attached; that has undergone acetylation. | 1880 | Go To Quotation |
| acetylcysteine | An acetylated form of the amino acid cysteine, which is an antioxidant used as a… | 1937 | Go To Quotation |
| actidione | = cycloheximide n. | 1947 | Go To Quotation |
| actinon | Chem. and Physics. An isotope of the radioactive gas radon, of mass number 219, occurring in the actinium decay series. | 1920 | Go To Quotation |
| activation | The action or process of activating something; the state of being activated; (Chem. and Biochem.… | 1883 | Go To Quotation |
| adduction | The combination of one molecule with another to form a larger molecule with no other products; = addition n. 7. Cf. adduct n. | 1952 | Go To Quotation |
| adenosyl | A radical formed by the loss of a hydroxyl group from the ribose part of the… | 1952 | Go To Quotation |
| Ala | The amino acid alanine. | 1945 | Go To Quotation |
| alabamine | (A name proposed for) the chemical element astatine. Cf. anglo-helvetium n. | 1932 | Go To Quotation |
| aldose | Any sugar whose molecule (in its open-chain form) contains an aldehyde group. Cf. ketose n. at ketone n. Derivatives. | 1890 | Go To Quotation |
| alicyclic | Having a molecular structure containing a ring or closed chain that lacks conjugated bonds… | 1890 | Go To Quotation |
| alkylammonium | A cation which can be regarded as a derivative of ammonium (NH 4 +) in which one or… | 1887 | Go To Quotation |
| alkylated | Of a compound, molecule, etc.: containing an added alkyl group, having an alkyl group attached; that has undergone alkylation. | 1883 | Go To Quotation |
| allicin | An antibacterial substance in garlic which is an oily yellow liquid with the characteristic odour of garlic. | 1944 | Go To Quotation |
| anchimeric | the participation of a functional group of a molecule in a reaction at an adjacent site… | 1953 | Go To Quotation |
| antarafacial | Of a pericyclic reaction undergone by a molecule: involving the formation of two new… | 1965 | Go To Quotation |
| antimitotic | Inhibiting mitosis. | 1948 | Go To Quotation |
| arene | Any aromatic hydrocarbon. Cf. aromatic adj. 2. | 1951 | Go To Quotation |
| Arg | The amino acid arginine. | 1945 | Go To Quotation |
| aromatizing | Causing or promoting aromatization. | 1941 | Go To Quotation |
| Asp | The amino acid aspartic acid. | 1945 | Go To Quotation |
| autoionization | Chem. The spontaneous ionization of a substance or molecule; a reaction between… | 1907 | Go To Quotation |
| biose | = disaccharide n. | 1887 | Go To Quotation |
| borohydride | A compound containing the radical -BH 4, or a substituted form of this radical. | 1940 | Go To Quotation |
| butylated | Of a compound or material: containing one or more added butyl groups. | 1923 | Go To Quotation |
| cannabidiol | (See quot. 1949.) | 1940 | Go To Quotation |
| carbanion | An organic ion containing negatively charged carbon. Cf. carbonium n. (b). | 1933 | Go To Quotation |
| carbohydrase | Any enzyme which hydrolyses complex carbohydrates, releasing simple sugars, or (more… | 1912 | Go To Quotation |
| carborane | Any of a group of compounds of carbon, boron, and hydrogen whose molecules are polyhedral… | 1962 | Go To Quotation |
| carboxy | attrib. Designating the carboxyl group —C O OH; of, relating to, or containing this group. | 1899 | Go To Quotation |
| carboxylate | trans. To introduce a carboxyl group into (a molecule or compound). | 1933 | Go To Quotation |
| carboxylation | The introduction of a carboxyl group into a molecule or compound to form a carboxylic acid or a carboxylate; an instance of this. | 1907 | Go To Quotation |
| cellulolysis | The chemical decomposition of cellulose. | 1953 | Go To Quotation |
| cephalothin | An antibiotic, C 16 H 16 N 2 O 6 S 2, derived from cephalosporin, given (usu. by injection… | 1962 | Go To Quotation |
| chloramphenicol | An antibiotic isolated from cultures of Streptomyces venezuelæ or prepared synthetically. Cf. Chloromycetin n. | 1949 | Go To Quotation |
| chloroprene | A colourless liquid, made from acetylene and hydrochloric acid, which polymerizes to form neoprene n. | 1931 | Go To Quotation |
| chlorothiazide | A white crystalline powder, C 7 H 6 ClN 3 O 4 S 2, used as a diuretic. | 1957 | Go To Quotation |
| conalbumin | An iron-binding albumin present in egg white and similar to transferrin. | 1900 | Go To Quotation |
| co-precipitation | The simultaneous precipitation of two or more compounds from a solution; the removal… | 1931 | Go To Quotation |
| coulombic | Of or pertaining to C. A. de Coulomb or the forces, laws, etc., discovered by him or named after him. | 1936 | Go To Quotation |
| cryogenics | The branch of physics which deals with the production of cryogenic temperatures and the effects of such temperatures on matter. | 1899 | Go To Quotation |
| cyclopentadienyl | A planar cyclic anion, C 5 H 5 −, derived from cyclopentadiene, which has aromatic… | 1918 | Go To Quotation |
| deprotonate | trans. To remove a proton (an H + ion) from (a molecule or atom). | 1952 | Go To Quotation |
| derivatization | The conversion of a compound into a derivative. | 1937 | Go To Quotation |
| derivatized | That has been converted into a derivative. | 1953 | Go To Quotation |
| dimer | A compound related to some other compound by having twice the number of atoms of… | 1930 | Go To Quotation |
| dinitrogen | attrib. Used to designate compounds, groups, etc., containing two nitrogen atoms. | 1914 | Go To Quotation |
| dodecahedrane | A hydrocarbon, (CH) 20, in which the carbon atoms of each molecule lie at the vertices… | 1964 | Go To Quotation |
| dopamine | The immediate precursor of noradrenaline in the body, found esp. in nervous and… | 1959 | Go To Quotation |
| electrocyclic | Designating a reaction characterized either by the formation of a single bond between… | 1965 | Go To Quotation |
| electromeric | Of, relating to, or involving electromers; of the nature of an electromer. | 1913 | Go To Quotation |
| electronically | Chem. and Physics. As regards electrons; in terms of electrons. | 1912 | Go To Quotation |
| electrophilicity | Electrophilic character. | 1951 | Go To Quotation |
| enantiomeric | Of the nature of an enantiomer; of or relating to enantiomers. | 1933 | Go To Quotation |
| epoxide | A chemical compound the molecules of which contain an oxygen atom attached to two… | 1930 | Go To Quotation |
| ethambutol | A synthetic bacteriostatic compound used (usu. as the hydrochloride) in the… | 1961 | Go To Quotation |
| excelsin | A crystalline globulin contained in the Brazil nut. | 1896 | Go To Quotation |
| ferrocene | An orange crystalline compound, Fe(C 5 H 5) 2, a molecule of which consists of an… | 1952 | Go To Quotation |
| fluorocarbon | Any of a large class of compounds of carbon and fluorine analogous to the… | 1937 | Go To Quotation |
| folate | A salt or ester, or the anion, of folic acid. Also (as a mass noun): folic acid or any… | 1944 | Go To Quotation |
| folic | pteroyl(mono)glutamic acid, a vitamin of the B group found in a wide variety of… | 1941 | Go To Quotation |
| folinic | a derivative of folic acid, believed to be the form in which the latter acts as a coenzyme. | 1949 | Go To Quotation |
| footballene | = buckminsterfullerene n. | 1986 | Go To Quotation |
| formylate | To introduce one or more formyl groups into (a compound or molecule). | 1931 | Go To Quotation |
| glycosyl | Any univalent radical derived from a sugar by the removal of a hydroxyl group from an anomeric carbon atom. Usu. attrib. | 1945 | Go To Quotation |
| glycosylation | The introduction of a glycosyl group into a molecule or compound, esp. a protein, by the formation of a glycosidic bond. | 1945 | Go To Quotation |
| halo- | any compound in which three of the four hydrogen atoms of methane are replaced by halogens. | 1931 | Go To Quotation |
| hecogenin | A steroid glycoside (see quot. 1965) occurring in various plants, as Hechtia texensis… | 1943 | Go To Quotation |
| hydroborate | trans. To add a borane or other boron compound to (another compound) by hydroboration. | 1961 | Go To Quotation |
| hydrolysate | A product of, or preparation obtained by, hydrolysis. | 1915 | Go To Quotation |
| hydroperoxyl | The radical —O—HO, the protonated form of the superoxide anion. Usu. attrib. | 1952 | Go To Quotation |
| incubate | A preparation, or material, that has been incubated. | 1959 | Go To Quotation |
| indomethacin | A yellowish-white powdery indole derivative, C 19 H 16 NO 4 Cl, which… | 1963 | Go To Quotation |
| -ine | At first used unsystematically in forming names of extractive principles and… | 1928 | Go To Quotation |
| ionogram | Chem. and Med. A record or image produced as the result of an ionographic separation… | 1952 | Go To Quotation |
| -ir- | A formative element in the names of three-membered heterocyclic ring systems.… | 1928 | Go To Quotation |
| isooctane | 2-Methylheptane, CH 3 ·(CH 2) 4 ·CH(CH 3)·CH 3, a liquid hydrocarbon that occurs in petroleum. Obs. | 1909 | Go To Quotation |
| kinetin | 6–Furfurylaminopurine, C 10 H 9 N 5 O, a compound that is a decomposition product… | 1955 | Go To Quotation |
| kolm | (See quot. 1954.) | 1930 | Go To Quotation |
| lactulose | A synthetic disaccharide of fructose and galactose that is given as a laxative; 4- O… | 1930 | Go To Quotation |
| lauroyl | The radical CH 3 (CH 2) 10 CO— of lauric acid. Usu. attrib. | 1939 | Go To Quotation |
| leucosin | An albumin found in some cereal grains. | 1894 | Go To Quotation |
| luminol | A pale yellow crystalline bicyclic hydrazide, C 8 H 7 N 3 O 2, which gives a… | 1934 | Go To Quotation |
| macrobicyclic | Containing or consisting of two linked macrocyclic rings. | 1968 | Go To Quotation |
| maltotriose | A trisaccharide, C 18 H 32 O 16, consisting of three glucose units and formed by the action of amylases on starch. | 1949 | Go To Quotation |
| manostatic | Of, relating to, or involving a manostat or manostats. | 1936 | Go To Quotation |
| melatonin | A hormone, synthesized from serotonin by cells of the pineal gland and retina, which… | 1958 | Go To Quotation |
| mercurated | Of a compound: that has had mercury introduced into its structure; containing mercury as a substituent. | 1921 | Go To Quotation |
| mesitoic | an aromatic carboxylic acid, (CH 3) 3 C 6 H 2 COOH, derived… | 1948 | Go To Quotation |
| Met | The amino acid methionine. | 1945 | Go To Quotation |
| metalate | trans. To bring about metalation in (a compound); to subject (a compound) to metalation. | 1939 | Go To Quotation |
| metalation | The introduction of a metal atom into a compound; spec. the replacement of a hydrogen atom… | 1934 | Go To Quotation |
| mevalonic | a carboxylic acid first identified as a growth factor for lactobacilli and later recognized… | 1957 | Go To Quotation |
| monensin | An open-chain polyether produced by the bacterium Streptomyces cinnamonensis, which acts… | 1967 | Go To Quotation |
| multipole | Physics. A system of 2 l monopoles (l = 1, 2, 3,…) with no net charge or pole strength… | 1916 | Go To Quotation |
| myristoyl | Either of the radicals C 13 H 27 CO— and C 13 H 27 COO− derived from myristic acid, CH 3 (CH 2) 12 COOH. Also: = myristyl n. | 1939 | Go To Quotation |
| nepetalactone | A monoterpenoid lactone containing a methylcyclopentane ring, C 10 H 14 O 2, which is found… | 1941 | Go To Quotation |
| nesslerized | Treated with or produced by treatment with Nessler's reagent. | 1884 | Go To Quotation |
| nitrene | Any of a class of extremely reactive organic compounds whose molecules contain a… | 1960 | Go To Quotation |
| nitrenium | Usu. attrib. An ion which is a positively charged free radical derived from a nitrene by loss of an electron. | 1965 | Go To Quotation |
| nitridation | A reaction analogous to oxidation but involving nitrogen or ammonia rather than oxygen or… | 1911 | Go To Quotation |
| nitridizing | That brings about nitridation. Chiefly in nitridizing agent. | 1911 | Go To Quotation |
| nitroreductase | Any enzyme that catalyses the reduction of a nitro group, usually to an amino group, in… | 1953 | Go To Quotation |
| nitrosative | Relating to, involving, or bringing about nitrosation. | 1967 | Go To Quotation |
| nonamer | A compound whose molecule is formed from nine monomers; a molecule of such a compound. | 1946 | Go To Quotation |
| non-linearly | In a non-linear manner (non-linear adj. 1). | 1943 | Go To Quotation |
| Np | The element neptunium. | 1942 | Go To Quotation |
| octamethylcyclotetrasiloxane | A colourless oily liquid compound with a cyclic tetrameric structure, [(CH 3) 2 SiO] 4, that… | 1946 | Go To Quotation |
| okadaic | a toxic compound, C 44 H 68 O 13, which is a fatty acid derivative of a… | 1981 | Go To Quotation |
| oogoniol | A steroid hormone produced by male hyphae of several filamentous fungi of the genus Achlya… | 1975 | Go To Quotation |
| overpotential | = overvoltage n. | 1920 | Go To Quotation |
| oxa- | Forming names of compounds in which an oxygen atom is regarded as having replaced a methylene (—CH 2 —) group. | 1928 | Go To Quotation |
| oxathiene | = oxathiin n. | 1952 | Go To Quotation |
| oxoglutarate | In full α-oxoglutarate (or 2-oxoglutarate). The anion of α-oxoglutaric acid, which is… | 1945 | Go To Quotation |
| oxoglutaric | (in full α-oxoglutaric acid, 2-oxoglutaric acid), the dicarboxylic keto acid… | 1945 | Go To Quotation |
| oxychloro | attrib. Of, relating to, or designating an ion consisting of oxygen and chlorine, or a hydroxyl group and chlorine. | 1937 | Go To Quotation |
| oxyproline | = hydroxyproline n. at hydroxy- comb._form 3. | 1910 | Go To Quotation |
| oxytetracycline | The 5-hydroxy derivative of tetracycline, used as an antibiotic; C 22 H 24 N 2 O 9 | 1952 | Go To Quotation |
| oxytocin | A mammalian pituitary hormone that stimulates contraction of the smooth muscle of the… | 1928 | Go To Quotation |
| palladiumized | Coated, treated, or combined with palladium. | 1911 | Go To Quotation |
| palmitoyl | The acyl radical CH 3 (CH 2) 14 (O)C—, derived from palmitic acid. | 1939 | Go To Quotation |
| pantothenate | A salt or ester, or the anion, of pantothenic acid. | 1938 | Go To Quotation |
| pantothenic | an oily, liquid carboxylic acid whose molecule consists of β-alanine linked to a… | 1933 | Go To Quotation |
| pedial | Relating to or designating a triclinic crystal form having no centre of symmetry. Cf. pinacoidal adj. | 1922 | Go To Quotation |
| penicillanate | A salt or ester of penicillanic acid. | 1956 | Go To Quotation |
| penicillanic | a crystalline compound, C 8 H 11 NO 2 S, whose bicyclic molecular structure is the nucleus… | 1953 | Go To Quotation |
| pentanoic | any saturated fatty acid of the formula C 4 H 9 COOH, of which four isomers exist; spec. (also n… | 1913 | Go To Quotation |
| perester | An ester of a peracid. | 1933 | Go To Quotation |
| permethylated | Having undergone methylation to the maximum extent; having the maximum number of methyl substituents. | 1937 | Go To Quotation |
| peroxynitric | an unstable acid, HNO 4, resulting from the reaction of nitrogen dioxide with water… | 1941 | Go To Quotation |
| persorption | Physical Chem. Sorption in which molecules of a gas enter pores in a solid that are only a little larger than themselves. | 1930 | Go To Quotation |
| pertechnetate | A salt of pertechnetic acid. Freq. attrib. (Med.), with reference to the use of such a salt… | 1949 | Go To Quotation |
| pertechnic | = pertechnetic adj. | 1952 | Go To Quotation |
| pervaporate | intr. Of a liquid: to undergo pervaporation. rare. | 1917 | Go To Quotation |
| pervaporation | The evaporation of a liquid through a semipermeable membrane with which it is in contact. | 1917 | Go To Quotation |
| Phe | The amino acid phenylalanine. | 1945 | Go To Quotation |
| phenylmercuric | Containing a phenyl group bonded directly to a mercury atom. | 1918 | Go To Quotation |
| phenylmercury | Containing a phenyl group bonded directly to a mercury atom; phenylmercuric. | 1921 | Go To Quotation |
| photoisomer | An isomer formed by the action of light on a different, often more stable, form of a compound. | 1957 | Go To Quotation |
| photoisomerize | intr. To undergo photoisomerization. Also trans.: to cause to undergo photoisomerization. | 1960 | Go To Quotation |
| picolinate | A salt, ester, or coordination compound of picolinic acid; the anion of picolinic acid. | 1930 | Go To Quotation |
| pinacolone | A colourless oily ketone having an odour of peppermint, made by… | 1920 | Go To Quotation |
| pipsyl | The radical p -iodophenylsulphonyl, I—C 6 H 4 —SO 2 —, compounds of which are used as radioactive labels. Usu. attrib. | 1946 | Go To Quotation |
| polyamide | Any of a large class of polymers in which the units are linked by an amide group —CO·NH—… | 1929 | Go To Quotation |
| polycondensate | A product or preparation resulting from polycondensation. | 1942 | Go To Quotation |
| polyester | Chem. Any polymer in which the units are joined by an ester linkage, —CO·O—. | 1922 | Go To Quotation |
| polyesterification | A reaction or process which yields a polyester. | 1932 | Go To Quotation |
| polyfunctional | Of a compound: having two or more different functional groups in the molecule. Also… | 1929 | Go To Quotation |
| polyhydroxy- | Forming names of compounds containing two or more hydroxyl groups in the molecule. | 1911 | Go To Quotation |
| polyphenylene | A polymer in which the repeating unit is or contains the para -phenylene group. Freq. attrib.… | 1921 | Go To Quotation |
| polythionate | A salt of a polythionic acid, containing an anion of the form S n O 6 2− (where n = 2, 3, 4, etc.). | 1895 | Go To Quotation |
| polyunsaturation | The property of being polyunsaturated; the extent of this; the presence of a… | 1952 | Go To Quotation |
| polyurethane | Any of a large class of polymers having the units linked by the group —NH·CO·O—, which… | 1939 | Go To Quotation |
| polyyne | Any of a class of organic compounds containing two or more carbon–carbon triple bonds, esp.… | 1932 | Go To Quotation |
| potentiometry | The measurement of potential differences or electromotive forces by means of a potentiometer, esp. in electrochemistry. | 1916 | Go To Quotation |
| Pro | The amino acid proline. | 1945 | Go To Quotation |
| prochiral | Designating a molecule which is not chiral but can become so by means of a simple reaction… | 1966 | Go To Quotation |
| propenoic | = acrylic acid n. at acrylic adj. n. Special uses. | 1948 | Go To Quotation |
| prostanoid | Any of a group of lipids, including the prostaglandins, prostacyclins, and… | 1971 | Go To Quotation |
| protiated | Containing ordinary hydrogen (protium, 1 H) as distinct from deuterium or tritium. Cf. deuterated adj., tritiated adj. | 1951 | Go To Quotation |
| protogenic | Of a substance, molecular species, etc.: able to supply a hydrogen atom… | 1930 | Go To Quotation |
| protonate | trans. To transfer a proton to (a substance, molecule, group, etc.), so that a coordinate… | 1951 | Go To Quotation |
| protonated | Having received a proton; bonded to an additional proton. Cf. protonate v. | 1945 | Go To Quotation |
| pseudorotate | intr. To undergo pseudorotation. | 1961 | Go To Quotation |
| pseudorotation | A change in molecular configuration involving concerted displacements of the… | 1947 | Go To Quotation |
| puromycin | A substance with antibiotic activity which is produced by certain species of Streptomyces… | 1953 | Go To Quotation |
| pyranoside | Any glycoside in which the sugar component is in the form of a pyranose. | 1930 | Go To Quotation |
| pyridinium | A cation having the formula C 5 H 6 N +, consisting of a protonated pyridine… | 1896 | Go To Quotation |
| pyrolysate | A product of pyrolysis. | 1941 | Go To Quotation |
| quadrupolar | Of the nature of a quadrupole; of or relating to a quadrupole. | 1942 | Go To Quotation |
| quaternize | trans. To convert (an atom or compound, esp. a tertiary amine) into a quaternary form. | 1932 | Go To Quotation |
| racemize | trans. To convert (an optically active substance or structure) into a racemic form. | 1901 | Go To Quotation |
| radiogenetic | = radiogenic adj. 2. | 1934 | Go To Quotation |
| radioiodine | Any of the radioactive isotopes of iodine; esp. iodine-131, an artificial isotope with… | 1935 | Go To Quotation |
| radiopure | = radiochemically pure adj. at radiochemically adv. | 1947 | Go To Quotation |
| radioscanning | The action or process of performing a radioscan. | 1962 | Go To Quotation |
| Raney | (a proprietary name for) a catalyst made from Raney nickel. | 1932 | Go To Quotation |
| reactant | attrib. Taking part in or undergoing a chemical reaction. Also (rare)… | 1915 | Go To Quotation |
| reductant | = reducing agent n. at reducing adj. 2. Cf. oxidant n. | 1924 | Go To Quotation |
| Reformatsky | attrib. and (occas.) in the genitive. Designating a class of condensation reactions in… | 1913 | Go To Quotation |
| regiospecific | Of a reaction taking place at a particular site on a molecule: leading to predominant… | 1968 | Go To Quotation |
| relaxin | A polypeptide hormone secreted by the corpus luteum (and by the placenta during… | 1930 | Go To Quotation |
| retinal | The aldehyde of retinol (vitamin A 1), a yellow carotenoid compound which occurs in… | 1960 | Go To Quotation |
| retinoic | a fragrant, yellow, crystalline acid which is produced by the oxidation of retinol (vitamin… | 1960 | Go To Quotation |
| retinol | A yellow carotenoid alcohol that is the most potent form of vitamin A in most… | 1960 | Go To Quotation |
| Rn | The element radon. | 1923 | Go To Quotation |
| ryanodine | A poisonous alkaloid which occurs in the stems of the tropical American shrub Ryania speciosa… | 1948 | Go To Quotation |
| saxitoxin | A toxic alkaloid (C 10 H 17 O 4 N 7.2HCl) synthesized by dinoflagellates of… | 1962 | Go To Quotation |
| Schmidt | a widely-used synthetic method in which a carbonyl compound is treated with hydrazoic acid… | 1937 | Go To Quotation |
| sigmatropic | Involving the movement of a sigma bond to a new pair of atoms within a molecule. | 1965 | Go To Quotation |
| smythite | A sulphide of iron and probably nickel found as opaque bronze-coloured crystals that… | 1956 | Go To Quotation |
| sono- | luminescence excited in a substance by the passage of sound waves through it. | 1939 | Go To Quotation |
| spherand | Any of a class of organic ligands with molecules in the form of a hollow sphere… | 1979 | Go To Quotation |
| stereoselective | Of a reaction: producing a particular stereoisomeric form of the… | 1957 | Go To Quotation |
| stereospecific | Of a reaction: = stereoselective adj. Also of a catalyst: causing a reaction to be (more) stereoselective. | 1949 | Go To Quotation |
| submicro | attrib. Designating something smaller in size or scale than that designated micro; spec.… | 1895 | Go To Quotation |
| sulphathiazole | The readily absorbed sulphonamide C 3 H 2 NS·NH·SO 2 ·C 6 H 4 ·NH 2, now rarely used; thiazol-2-ylsulphanilamide. | 1939 | Go To Quotation |
| taxol | A taxane, C 47 H 51 NO 14, originally isolated from the bark of the Pacific yew, Taxus brevifolia… | 1971 | Go To Quotation |
| tensimeter | An instrument for measuring vapour pressure. | 1907 | Go To Quotation |
| tetracycline | Any of a number of antibiotics structurally related to this compound. | 1952 | Go To Quotation |
| tetrafluoroethylene | A dense, colourless gas, F 2 C:CF 2, which is polymerized to make plastics. Cf. polytetrafluoroethylene n. | 1933 | Go To Quotation |
| thiabendazole | An anthelmintic used in veterinary and human medicine, esp. against intestinal nematodes. | 1961 | Go To Quotation |
| thioctic | any of the sulphur-containing acids with the formula S—S—CH 2 (CH 2) x CH(CH 2) 5− x… | 1952 | Go To Quotation |
| threitol | A crystalline tetrahydroxy alcohol, HOCH 2 (CHOH) 2 CH 2 OH, formed by the reduction of threose. | 1935 | Go To Quotation |
| titania | = titanium dioxide n. at titanium n. Compounds. | 1922 | Go To Quotation |
| tosyl | The para isomer of the univalent radical toluenesulphonyl, H 3 C·C 6 H 4 ·SO 2 —. | 1938 | Go To Quotation |
| transactivation | Activation of one entity by another which is trans to it; spec. in Biol., activation of a… | 1965 | Go To Quotation |
| transketolase | Any enzyme which catalyses the transfer of a ketol group, spec. of the glycolaldehyde group at various stages in photosynthesis. | 1953 | Go To Quotation |
| trimer | A compound whose molecule is composed of three molecules of monomer. | 1939 | Go To Quotation |
| tropone | A viscous hygroscopic oil, C 7 H 6 O, which is a cyclic ketone of aromatic character and… | 1951 | Go To Quotation |
| tropylium | The cation C 7 H 7 + consisting of a ring of seven CH groups. Usu. attrib. | 1954 | Go To Quotation |
| ultracentrifuge | A very high-speed centrifuge, now usu. generating over 100,000 g, used to separate… | 1924 | Go To Quotation |
| unreacted | Not having undergone reaction. | 1950 | Go To Quotation |
| vasopressin | A polypeptide hormone present in the neurohypophysis of mammals which controls the… | 1928 | Go To Quotation |
| virginium | = francium n. | 1932 | Go To Quotation |
| Wittig | Used attrib. to designate various synthetic techniques introduced by Wittig, as Wittig reaction… | 1951 | Go To Quotation |
| Woodward–Hoffmann | Used attrib. with reference to a series of generalized symmetry selection rules first… | 1968 | Go To Quotation |
