| aa | A kind of volcanic lava with a rough, jagged surface covered with loose… | 1859 | Go To Quotation |
| abietic | a terpenoid acid which is the main constituent of rosin; (also) any of a group of… | 1826 | Go To Quotation |
| acaulescent | Apparently stemless; having a very short stem, or a stem concealed in the ground. | 1822 | Go To Quotation |
| adelpholite | A mineral containing iron, manganese, niobium, and other elements, subsequently identified with samarskite. | 1859 | Go To Quotation |
| agrostologic | = agrostological adj. | 1897 | Go To Quotation |
| åkermanite | A mineral of the melilite group, occurring typically as blocky prisms in siliceous… | 1890 | Go To Quotation |
| albuminousness | The state or quality of being albuminous. | 1858 | Go To Quotation |
| algerite | A mineral of uncertain identity, said to resemble pinite. | 1849 | Go To Quotation |
| alipite | An apple-green, earthy mineral of uncertain identity, said to be a hydrated silicate of nickel and magnesium. | 1853 | Go To Quotation |
| aliquot | trans. To measure out (a substance) into small samples of equal size; to divide into… | 1873 | Go To Quotation |
| alisonite | A copper and lead sulphide mineral of uncertain identity, perh. a mixture. | 1859 | Go To Quotation |
| alkalamide | A compound which is both an amine and an amide, containing both acid and alcohol radicals bonded to a nitrogen atom. | 1849 | Go To Quotation |
| allomorphism | Change of crystal form without change in chemical composition; the existence or occurrence of allomorphs (allomorph n.). | 1845 | Go To Quotation |
| allomorphite | A form of barite that is pseudomorphous after anhydrite. | 1842 | Go To Quotation |
| allotropism | = allotropy n. | 1845 | Go To Quotation |
| alumian | A white mineral originally thought to consist of aluminium sulphate and now identified with natroalunite. | 1858 | Go To Quotation |
| alveolite | A fossil of the genus Alveolites of tabulate, branching, or encrusting corals found… | 1818 | Go To Quotation |
| amarantite | A hydrous ferric sulphate of brownish-red colour (see quot. 1938). | 1890 | Go To Quotation |
| anhedral | Applied to crystals that are not bounded by plane faces; also called allotriomorphic adj., xenomorphic. | 1898 | Go To Quotation |
| anorthosite | A granular igneous rock composed mainly of a soda-lime feldspar. | 1863 | Go To Quotation |
| Archaean | Of or pertaining to crystalline rocks of Pre-Cambrian age (see quots.). Also ellipt. as n. | 1872 | Go To Quotation |
| arizonite | A titanate of iron found in Arizona. | 1909 | Go To Quotation |
| articulite | C. M. Wetherill's name for: the rock itacolumite, a form of sandstone. | 1867 | Go To Quotation |
| Atlantosaurus | An extinct genus of huge dinosaurian reptiles of the sub-order Sauropoda; also, a reptile of this genus. | 1877 | Go To Quotation |
| autoclastic | Of a rock or its structure: consisting of fragments produced in situ by crushing or granulation. | 1891 | Go To Quotation |
| autogram | = autograph n. (in various senses). | 1862 | Go To Quotation |
| barbierite | (See quots.) | 1910 | Go To Quotation |
| batholith | A large dome-shaped mass of intrusive igneous rock without a visible foundation. | 1903 | Go To Quotation |
| beryllonite | A phosphate of beryllium and sodium, NaBePO 4. | 1888 | Go To Quotation |
| big-eye | attrib. Designating various kinds of fish with large eyes. See also bigeye tuna n. at Special uses. | 1818 | Go To Quotation |
| biostratigraphic | Of or relating to biostratigraphy. | 1925 | Go To Quotation |
| Brachiosaurus | A genus of huge dinosaurs, with the forelegs longer than the hind legs; also, an animal of this genus. | 1903 | Go To Quotation |
| brecciate | trans. To reduce to breccia. | 1903 | Go To Quotation |
| Brontosaurus | An extinct genus of dinosaurian reptiles existing on all the continents during the… | 1879 | Go To Quotation |
| bustamite | A manganese-containing mineral, typically occurring as pink to reddish-brown prisms. | 1830 | Go To Quotation |
| californite | A compact form of green vesuvianite found in California. | 1903 | Go To Quotation |
| canfieldite | A rare sulphide of silver and tin. | 1893 | Go To Quotation |
| cappelenite | A silico-borate of yttrium and barium, from Norway. | 1886 | Go To Quotation |
| carbonatite | Any intrusive or extrusive igneous rock containing a significant proportion (usually… | 1924 | Go To Quotation |
| cavolinite | A variety of nephelite, found on Vesuvius, characterized by a silky lustre. | 1826 | Go To Quotation |
| ceratosaurus | In full Ceratosaurus nasicornus, an extinct dinosaurian reptile such as those… | 1884 | Go To Quotation |
| chathamite | A variety of smaltite containing much nickel. | 1844 | Go To Quotation |
| christianite | A proposed synonym of phillipsite n. | 1826 | Go To Quotation |
| cingular | Of or belonging to a cingulum; = cingulate adj. | 1904 | Go To Quotation |
| clintonite | A variety (or a synonym) of seybertite n. | 1831 | Go To Quotation |
| colemanite | A mineral found in California, akin to Priceite: see quot. 1884. | 1884 | Go To Quotation |
| conchifragous | Shell-breaking. | 1904 | Go To Quotation |
| cookeite | A variety of lithium mica, in colour white to yellowish green, occurring in minute scales, and in slender six-sided prisms. | 1866 | Go To Quotation |
| copperasine | A sulphate of iron and copper from the decomposition of copper pyrites; allied to Jarosite. | 1859 | Go To Quotation |
| coracite | A variety of pitchblende, from Lake Superior. | 1849 | Go To Quotation |
| coronadite | An oxide of lead and manganese, PbMn 8 O 16, occurring in dark, fibrous masses. | 1904 | Go To Quotation |
| cortlandtite | A coarse-grained rock composed chiefly of hornblende and olivine; a variety of peridotite. | 1886 | Go To Quotation |
| corundophilite | A silicate of alumina, iron, and magnesia, occurring in green micaceous crystals. | 1851 | Go To Quotation |
| cosalite | A native sulphide of lead and bismuth. | 1868 | Go To Quotation |
| cryophyllite | A lithium- and iron-containing mica, now regarded as a variety of lepidolite. | 1866 | Go To Quotation |
| cryoturbation | Physical disturbance of the soil by the action of frost on water in the soil; an instance of such disturbance. | 1946 | Go To Quotation |
| crystallogenic | Crystal-forming, producing crystallization; (also) of or relating to crystal formation. | 1836 | Go To Quotation |
| ctenophoran | An animal of the phylum Ctenophora; a ctenophore, a comb jelly. | 1863 | Go To Quotation |
| cummingtonite | A basic silicate of magnesium and ferrous iron, (Mg, Fe) 7 Si 8 O 22 (OH) 2, that is… | 1824 | Go To Quotation |
| cyrto- | repr. Greek κυρτο- from κυρτός curved, arched. In some recent technical terms, as cyrtoˈceratite… | 1867 | Go To Quotation |
| damourite | A hydrous potash mica, with pearly lustre, occurring in small yellowish scales. | 1846 | Go To Quotation |
| danaite | A variety of arsenopyrite or mispickel, containing cobalt. | 1833 | Go To Quotation |
| danalite | A silicate of iron, glucinum, etc. with sulphide of zinc, occurring in reddish octahedrons in granite. | 1866 | Go To Quotation |
| danburite | A boro-silicate of lime, brittle, translucent, and of a yellowish or whitish colour. | 1839 | Go To Quotation |
| dannemorite | A variety of hornblende. | 1857 | Go To Quotation |
| daubreite | A native oxy-chloride of bismuth. | 1876 | Go To Quotation |
| davyne | A variety of nephelite, from Vesuvius. | 1826 | Go To Quotation |
| dawsonite | A hydrous carbonate of aluminium and sodium, in white transparent or translucent crystals. | 1875 | Go To Quotation |
| dechenite | A vanadate of lead and zinc, occurring in red or reddish-yellow masses. | 1851 | Go To Quotation |
| degradational | Of or pertaining to (biological) degradation; manifesting structural degradation. | 1863 | Go To Quotation |
| diabantite | A chlorite-like mineral occurring in diabase and giving to this rock its green colour. | 1875 | Go To Quotation |
| dianite | Name given by Von Kobel in 1860 to a variety of columbite n., supposed to contain a new metal called by him dianium. | 1861 | Go To Quotation |
| dickinsonite | A hydrous phosphate of manganese, calcium, and sodium, usually micaceous in structure and green in colour. | 1878 | Go To Quotation |
| dimagnetite | A mineral consisting mainly of ferroso-ferric oxide, occurring in rhombic prisms, regarded… | 1852 | Go To Quotation |
| diplodocus | An individual of the extinct genus of gigantic herbivorous dinosaurs of the order… | 1884 | Go To Quotation |
| diploite | A variety of Anorthite, also called Latrobite. | 1825 | Go To Quotation |
| dreelite | The former name of a supposed sulphate of barium and calcium (see quots. 1888 1950). | 1836 | Go To Quotation |
| dufrenoysite | An arsenical sulphuret of lead, occurring in highly modified prisms, of grey colour and metallic lustre. | 1848 | Go To Quotation |
| dumortierite | A silicate of alumina, occurring in minute crystals in gneiss, and showing unusual dichroism. | 1881 | Go To Quotation |
| durangite | A fluo-arsenate of aluminium and sodium, in orange-red crystals. | 1869 | Go To Quotation |
| dysanalyte | A columbo-titanate of lime, in black cubical crystals. | 1877 | Go To Quotation |
| edisonite | A name formerly given to a supposed variety of rutile. Disused. | 1888 | Go To Quotation |
| eglestonite | A native oxychloride of mercury, occurring in brownish-yellow isometric crystals. | 1903 | Go To Quotation |
| emerylite | A silicate of calcium and aluminium, occurring in trimetric hemihedral crystals, with a monoclinic aspect; = margarite n. | 1849 | Go To Quotation |
| empholite | Hydrous silicate of alumina, found in Sweden in minute radiated crystals. | 1883 | Go To Quotation |
| empressite | A telluride of silver, of disputed composition (see quots.). | 1914 | Go To Quotation |
| enceladite | ‘A borotitanate of magnesia and iron, with 15 to 20 p.c. of boric acid’ (Dana); = warwickite n. | 1846 | Go To Quotation |
| ephesite | A pearly-white lamellar mineral, closely related to margarite. | 1851 | Go To Quotation |
| euchlorite | A variety of magnesia mica of a deep green colour, found at Chester (Mass.) in 1876. | 1876 | Go To Quotation |
| euphyllite | A hydrous silicate, micaceous in structure, and of a white colour. | 1849 | Go To Quotation |
| fairfieldite | A hydrous phosphate of calcium, manganese, and iron. | 1879 | Go To Quotation |
| fasciculite | Tufted fibrous hornblende. | 1823 | Go To Quotation |
| ferrazite | A hydrated phosphate of lead, barium, and aluminium. | 1919 | Go To Quotation |
| fieldite | A zinc-containing form of tetrahedrite now regarded as having been an impure specimen. | 1856 | Go To Quotation |
| fillowite | A phosphate of manganese, iron, calcium and sodium, found in transparent yellow or brown crystals. | 1879 | Go To Quotation |
| fischerite | A hydrous phosphate of aluminium, found in green veins in sandstone. | 1846 | Go To Quotation |
| fluorene | A crystalline tricyclic aromatic hydrocarbon obtained from coal tar and used as a… | 1867 | Go To Quotation |
| franklinite | A compound of oxides of iron, manganese, and zinc, found in brilliant black crystals. | 1820 | Go To Quotation |
| galactically | With regard to a galaxy or galaxies; in galactic terms. | 1903 | Go To Quotation |
| gamsigradite | A velvet-black manganese-containing mineral (now regarded as a variety of hornblende). | 1862 | Go To Quotation |
| Gegenschein | A patch of very faint nebulous light occurring in the ecliptic opposite the sun. | 1880 | Go To Quotation |
| genthite | A hydrous silicate of nickel and magnesium, found in applegreen incrustations and amorphous masses. | 1867 | Go To Quotation |
| geomagnetism | The magnetic properties and phenomena of the earth; terrestrial magnetism. Also: the branch of science concerned with this. | 1895 | Go To Quotation |
| geosynclinal | = geosyncline n. Now rare. | 1873 | Go To Quotation |
| gerhardtite | Basic nitrate of copper occurring in small dark green crystals. | 1885 | Go To Quotation |
| glacieret | A small glacier; applied by Leconte to a mass of ice revealed after an extended period… | 1875 | Go To Quotation |
| glaserite | = aphthitalite n. | 1852 | Go To Quotation |
| glaucophane | A mineral closely resembling Amphibole. | 1849 | Go To Quotation |
| glinkite | A pale-green variety of chrysolite. | 1849 | Go To Quotation |
| goyazite | Phosphate of aluminium and calcium found in small yellow grains in the diamond sands. | 1884 | Go To Quotation |
| graftonite | A pink to brown crystalline phosphate of calcium and bivalent iron and manganese, (Fe,Mn,Ca)… | 1900 | Go To Quotation |
| grahamite | A bituminous compound of several hydrocarbons, similar to asphaltum. | 1866 | Go To Quotation |
| gramenite | A grass-green variety of chloropal. | 1858 | Go To Quotation |
| granodiorite | Any of the plutonic igneous rocks intermediate in composition between true… | 1893 | Go To Quotation |
| griphite | A basic phosphate of manganese, sodium, calcium, iron, and aluminium occurring as dark brown or black masses. | 1891 | Go To Quotation |
| grothite | A variety of titanite containing yttrium. | 1867 | Go To Quotation |
| guanajuatite | A bluish-grey selenide of bismuth, Bi 2 Se 3, often containing a high proportion of sulphur. | 1877 | Go To Quotation |
| guarinite | Silicotitanate of calcium, found in small yellowish crystals. | 1859 | Go To Quotation |
| guyot | A flat-topped, submarine mountain; a kind of sea-mount. | 1946 | Go To Quotation |
| gyroscope | An instrument designed to illustrate the dynamics of rotating bodies, and… | 1856 | Go To Quotation |
| hancockite | A variety of epidote rich in strontium and lead. | 1899 | Go To Quotation |
| hanksite | Sulphate and carbonate of sodium, found in hexagonal prisms of white or yellowish colour. | 1885 | Go To Quotation |
| hatchettolite | A columbate of uranium, of yellow-brown colour and resinous lustre. | 1877 | Go To Quotation |
| hauerite | Native disulphide of manganese, occurring in reddish-brown crystals, usually octahedral. | 1847 | Go To Quotation |
| hetaerolite | A black oxide of zinc and manganese, ZnMn 2 O 4, isostructural with hausmannite and found… | 1877 | Go To Quotation |
| heterogone | = heterogonous adj. 1. | 1877 | Go To Quotation |
| heterogonous | Bot. Having incongruous reproductive organs; applied by Asa Gray to flowers… | 1877 | Go To Quotation |
| hiddenite | A variety of spodumene, found in transparent emerald-green crystals, and sometimes cut as a gem. | 1881 | Go To Quotation |
| hielmite | A black stanno-tantalate of iron and other bases, found as a massive mineral. | 1861 | Go To Quotation |
| homichlin | A sulphide of copper and iron, akin to Barnhardite. | 1859 | Go To Quotation |
| homœomorphism | Crystallogr. Homœomorphous constitution. | 1854 | Go To Quotation |
| homogone | = homogonous adj. 1. | 1877 | Go To Quotation |
| homogonous | Bot. Having similar reproductive organs; applied by Asa Gray to flowers in which there… | 1877 | Go To Quotation |
| homostyled | Having the styles or pistils (in different individual plants) of the same length relatively… | 1877 | Go To Quotation |
| hortonolite | A silicate mineral, (Fe, Mg) 2 SiO 4, yellow or greenish-yellow on fresh fracture… | 1869 | Go To Quotation |
| houghite | A variety of hydrotalcite, derived from an alteration of spinel. | 1851 | Go To Quotation |
| howardite | Min. A supposed silicate of iron and magnesium found in some meteorites. | 1848 | Go To Quotation |
| hübnerite | Tungstate of manganese, found in reddish-brown bladed crystals. | 1867 | Go To Quotation |
| hulsite | A black borate of bivalent and trivalent iron, magnesium, and calcium in which there… | 1908 | Go To Quotation |
| humboldtilite | A variety of melilite, often found in large crystals. | 1826 | Go To Quotation |
| humboldtine | Hydrous oxalate of iron, found usually in capillary crystals. | 1822 | Go To Quotation |
| hureaulite | Hydrous phosphate of manganese and iron, occurring in minute red crystals; found at… | 1831 | Go To Quotation |
| hypodigm | The material on which the description of a species is based. | 1940 | Go To Quotation |
| ichthyornis | An extinct genus of toothed birds (Odontornithes) belonging to the order… | 1872 | Go To Quotation |
| ihleite | A hydrous iron sulphate, found as a yellow efflorescence on graphite. | 1876 | Go To Quotation |
| ilesite | Hydrous sulphate of manganese, zinc, and iron, resulting from the decomposition of pyrite and sphalerite. | 1881 | Go To Quotation |
| incisiform | Having the form of an incisor tooth, esp. of that of a rodent. | 1885 | Go To Quotation |
| inesite | Hydrous silicate of manganese and calcium, found in flesh-coloured fibrous masses. | 1889 | Go To Quotation |
| ionite | A resinous hydrocarbon mineral found in the Ione valley, California. | 1877 | Go To Quotation |
| ionium | A radioactive isotope of thorium with mass number 230, produced by the alpha decay… | 1907 | Go To Quotation |
| isothermic | = isothermal adj. 1. | 1879 | Go To Quotation |
| jefferisite | A hydrous silicate of aluminium, iron, and magnesium, in foliated crystals, like… | 1866 | Go To Quotation |
| jeffersonite | A greenish-black variety of pyroxene, containing some zinc and manganese. | 1822 | Go To Quotation |
| jenkinsite | A variety of hydrophite, found as a fibrous incrustation on iron ore. | 1852 | Go To Quotation |
| jeremeievite | A transparent colourless borate of aluminium occurring in hexagonal prisms. | 1883 | Go To Quotation |
| josephinite | The terrestrial (as opposed to meteoric) alloy of nickel and iron, having about 67 to 77 per cent of nickel. | 1892 | Go To Quotation |
| kaliophilite | A silicate of aluminium and potassium, found in colourless prismatic crystals. | 1887 | Go To Quotation |
| kaolinite | A general term for those porcelain clays, found in masses of minute crystalline scales, of which kaolin is the typical variety. | 1867 | Go To Quotation |
| kehoeite | A hydrated hydroxide and phosphate of aluminium, zinc, and calcium, found as white, chalky, amorphous masses in South Dakota. | 1893 | Go To Quotation |
| keilhauite | A titano-silicate of calcium, yttrium, and other metals. | 1846 | Go To Quotation |
| kempite | An emerald-green basic chloride of manganese, Mn 2 (OH) 3 Cl, found in California. | 1924 | Go To Quotation |
| Keweenawan | Of, pertaining to, or designating the most recent division of the Proterozoic in North… | 1876 | Go To Quotation |
| kieserite | Hydrous magnesium sulphate, usually occurring in fine, granular, white masses, in… | 1862 | Go To Quotation |
| koninckite | Hydrous phosphate of iron, found, at Visé in Belgium, in small globular forms with a radiated structure. | 1885 | Go To Quotation |
| krennerite | A telluride of gold and silver, found in prismatic crystals. | 1878 | Go To Quotation |
| lansfordite | Hydrous carbonate of magnesium, resembling paraffin when first found. | 1888 | Go To Quotation |
| larderellite | Hydrous borate of ammonium, occurring as a white powder. | 1854 | Go To Quotation |
| laubanite | Hydrous silicate of aluminium and calcium, resembling stilbite. | 1888 | Go To Quotation |
| laurionite | Oxy-chloride of lead, formed by the action of sea-water on ancient lead slags. | 1887 | Go To Quotation |
| laurite | Sulphide of ruthenium, found with platinum in small brilliant crystals. | 1866 | Go To Quotation |
| lavenite | Silicate of zirconium, found in brown monoclinic crystals. | 1886 | Go To Quotation |
| lawrencite | Ferrous chloride found in meteoric iron. | 1877 | Go To Quotation |
| lawsonite | Hydrous silicate of aluminium and calcium, occurring usually in light blue crystals. | 1895 | Go To Quotation |
| lecontite | Hydrous sulphate of sodium and ammonium, found in colourless prismatic crystals. | 1858 | Go To Quotation |
| lederite | A synonym of gmelinite. Obs. | 1829 | Go To Quotation |
| liebigite | Hydrous carbonate of uranium and calcium, found in thin, yellow incrustations (Chester). | 1848 | Go To Quotation |
| lignitize | trans. To convert into lignite. | 1886 | Go To Quotation |
| lindsayite | An altered variety of anorthite. | 1850 | Go To Quotation |
| lintonite | A variety of thomsonite found in green amygdules in trap. | 1879 | Go To Quotation |
| lithification | The process of forming into stone. | 1872 | Go To Quotation |
| lithiophilite | A mineral containing a large proportion of lithium. | 1878 | Go To Quotation |
| litrameter | An instrument for ascertaining the specific gravity of liquids. | 1826 | Go To Quotation |
| livingstonite | Sulphantimonide of mercury. | 1874 | Go To Quotation |
| lopolith | A large intrusive mass similar to a laccolith but having the base centrally sunken. | 1918 | Go To Quotation |
| lossenite | Arsenate of iron and lead, occurring in small reddish-brown crystals. | 1895 | Go To Quotation |
| löwigite | Hydrous sulphate of aluminium and potassium, found in yellowish nodules (A. H. Chester). | 1862 | Go To Quotation |
| Loxa | the pale Peruvian bark obtained from the cinchona-tree (C. condaminea). | 1825 | Go To Quotation |
| loxoclase | A variety of orthoclase, containing sodium. | 1846 | Go To Quotation |
| lucasite | A micaceous mineral, occurring at Corundum Hill, N. Carolina. | 1886 | Go To Quotation |
| maclureite | = chondrodite n. | 1822 | Go To Quotation |
| magnetometer | An instrument for measuring the strength of a magnetic field (originally: that of the earth), or detecting its presence. | 1827 | Go To Quotation |
| majoid | Resembling or related to the genus Maja; spec. belonging to the group (now… | 1851 | Go To Quotation |
| manganin | Any of various alloys of copper, manganese, and nickel whose electrical… | 1894 | Go To Quotation |
| marmolite | A pale green foliated serpentine or chrysotile with a pearly lustre. | 1822 | Go To Quotation |
| marmoraceous | Characteristic of or resembling marble. | 1822 | Go To Quotation |
| marmorization | Transformation into marble. | 1903 | Go To Quotation |
| maxilliped | Any of a set of appendages occurring in pairs behind the maxillae in crustaceans, and… | 1846 | Go To Quotation |
| medjidite | A poorly characterized uranium mineral, possibly a uranium sulphate, first found near Adrianople (now Edirne), north-west Turkey. | 1848 | Go To Quotation |
| megasthenic | In J. D. Dana's classification: of or relating to a group of animals characterized as… | 1863 | Go To Quotation |
| melanochalcite | An amorphous pitch-black substance now regarded as a mixture of tenorite, chrysocolla, and malachite. | 1902 | Go To Quotation |
| meliphane | = meliphanite n. | 1867 | Go To Quotation |
| meneghinite | A monoclinic sulphide and antimonide of lead and copper, CuPb 13 Sb 7 S 24, that is a… | 1852 | Go To Quotation |
| Mesohippus | A genus of extinct small three-toed horses known from fossils found in Oligocene deposits… | 1875 | Go To Quotation |
| mesopodial | Designating any of a series of small bones which make up the carpus or the tarsus of… | 1880 | Go To Quotation |
| metagabbro | A metamorphic rock formed by alteration of gabbro. | 1904 | Go To Quotation |
| metagallic | a black solid obtained by heating gallic acid (not identified). | 1835 | Go To Quotation |
| metallicity | The quality of being metallic. | 1831 | Go To Quotation |
| meteoroid | A small body or particle moving through interplanetary space, usually belonging to a stream… | 1865 | Go To Quotation |
| michaelite | A mineral now regarded as identical with fiorite. | 1821 | Go To Quotation |
| microlite | Min. Any of a subgroup of minerals of the pyrochlore group, found in various pegmatites… | 1835 | Go To Quotation |
| Miohippus | A former genus of small horses, now extinct, known from North American Oligocene fossils; a fossil horse of this genus. | 1874 | Go To Quotation |
| missourite | A granular, dark-coloured, plutonic rock composed mainly of leucite, pyroxene, and sometimes olivine. | 1896 | Go To Quotation |
| moissanite | Trigonal silicon carbide, SiC, which occurs as colourless to blue or green hexagonal plates… | 1905 | Go To Quotation |
| molecular biology | Biology at the molecular level; esp. the branch of science concerned with… | 1884 | Go To Quotation |
| Mollisol | Geomorphol. = active layer n. at active adj. n. 2. rare. | 1946 | Go To Quotation |
| monetite | A triclinic hydrogen phosphate of calcium, CaH(PO 4), occurring as translucent, pale yellowish white crystals. | 1882 | Go To Quotation |
| monociliate | = monociliated adj. | 1866 | Go To Quotation |
| monrolite | A mineral now regarded as identical with sillimanite. | 1849 | Go To Quotation |
| montanite | A hydrated tellurate of bismuth, probably monoclinic but imperfectly described, that occurs as yellowish earthy incrustations. | 1868 | Go To Quotation |
| montroydite | Native mercuric oxide, HgO, an orthorhombic mineral occurring as deep red translucent to transparent crystals. | 1903 | Go To Quotation |
| morencite | A variety of nontronite, (Fe,Mg) 2 Si 4 O 10 (OH) 2, with part of the ferric iron… | 1904 | Go To Quotation |
| morganite | A pink translucent variety of beryl containing caesium, which is prized as a gemstone. | 1911 | Go To Quotation |
| mosesite | A cubic hydrated nitrogen compound of mercury (chemically, a salt of Millon's base)… | 1910 | Go To Quotation |
| nasonite | A trigonal silicate and chloride of calcium and lead, Ca 4 Pb 6 (Si 2 O 7) 3 Cl 2… | 1899 | Go To Quotation |
| natro- | any of the range of hexagonal basic hydrated sulphates of sodium, potassium… | 1902 | Go To Quotation |
| natrophilite | A yellow resinous phosphate of manganese and sodium, NaMnPO 4, crystallizing in the orthorhombic system. | 1890 | Go To Quotation |
| necronite | A feldspar having an unpleasant odour, said to be a variety of orthoclase. | 1819 | Go To Quotation |
| nemalite | A fibrous variety of brucite. | 1822 | Go To Quotation |
| neoglacial | Of or relating to the process or an episode of neoglaciation. | 1960 | Go To Quotation |
| nesquehonite | A hydrated form of magnesium carbonate, MgCO 3 ·3H 2 O, crystallizing in the monoclinic… | 1890 | Go To Quotation |
| newtonite | = alunite n. | 1891 | Go To Quotation |
| nickel–iron | Consisting of or containing an alloy of nickel and iron. | 1891 | Go To Quotation |
| nicotia | Chem. A substance present in extracts of tobacco, either nicotianin or (usually) nicotine. | 1830 | Go To Quotation |
| nivenite | = cleveite n. | 1889 | Go To Quotation |
| northupite | A chloride and carbonate of sodium and magnesium, Na 3 Mg(CO 3) 2 Cl, found as… | 1895 | Go To Quotation |
| ochrolite | A yellow oxychloride of lead and antimony, now regarded as identical with nadorite. | 1889 | Go To Quotation |
| oellacherite | A white or pink variety of muscovite containing a significant proportion of barium. | 1867 | Go To Quotation |
| ootocoid | In J. D. Dana's classification of the mammals: a mammal of the former order Oötocoidea… | 1863 | Go To Quotation |
| orangite | An orange-yellow variety of thorite. | 1851 | Go To Quotation |
| orientite | A mineral of the orthorhombic system consisting of a hydrated silicate of calcium… | 1921 | Go To Quotation |
| ornithichnite | Edward Hitchcock's name for: a fossil footprint, originally thought to be of a bird… | 1836 | Go To Quotation |
| ornithichnology | Edward Hitchcock's name for: the branch of palaeontology concerned with ‘ornithichnites’ or fossil footprints. | 1836 | Go To Quotation |
| ozarkite | = thomsonite n. | 1846 | Go To Quotation |
| ozokerite | A brown or black natural paraffin wax occurring in some bituminous shales and… | 1834 | Go To Quotation |
| pachnolite | A hydrated fluoride of aluminium, calcium, and sodium, NaCaAlF 6 ·H 2 O, occurring as… | 1866 | Go To Quotation |
| paigeite | A black borate of ferrous and ferric iron, now usually regarded as identical with vonsenite. | 1908 | Go To Quotation |
| palaeolimnologist | An expert in or student of palaeolimnology. | 1960 | Go To Quotation |
| palaeolimnology | The conditions and processes occurring in lakes in the geological past; the branch of science that deals with these. | 1942 | Go To Quotation |
| palaeontological | Of or relating to palaeontology. | 1839 | Go To Quotation |
| palaeopedologist | An expert in or student of palaeopedology. | 1943 | Go To Quotation |
| parisite | A brownish-yellow mineral of the trigonal crystal system, consisting of a fluoride… | 1846 | Go To Quotation |
| partzite | A cubic oxide and hydroxide of antimony and copper, Cu 2 Sb 2 (O,OH) 7, that belongs… | 1867 | Go To Quotation |
| pearceite | A black, lustrous, brittle mineral consisting of a sulphide of silver and arsenic, Ag 16 As… | 1896 | Go To Quotation |
| peckhamite | Enstatite, as occurring in a greenish yellow form in a meteorite which fell in Iowa in May 1879. | 1880 | Go To Quotation |
| peneplain | A low, nearly featureless tract of land of gently undulating relief, esp. one held to… | 1889 | Go To Quotation |
| penfieldite | A rare mineral of the hexagonal system which consists of a basic lead chloride, Pb 2 Cl 3… | 1892 | Go To Quotation |
| pennite | A greenish variety of hydrodolomite, containing nickel. | 1850 | Go To Quotation |
| peralkalinity | The state or degree of being peralkaline. | 1964 | Go To Quotation |
| pergelisol | = permafrost n. | 1946 | Go To Quotation |
| perispheric | Globular; spherical. In quot. 1939: large and spherical. | 1828 | Go To Quotation |
| petrofabric | Of or relating to petrofabrics. | 1934 | Go To Quotation |
| petrofabrics | The branch of geology concerned with the texture and microscopic structure of rocks, esp.… | 1934 | Go To Quotation |
| petrogenic | Of or relating to petrogeny; = petrogenetic adj. | 1908 | Go To Quotation |
| petrotectonic | Of or relating to petrotectonics; = petrofabric adj. | 1933 | Go To Quotation |
| petrotectonics | The branch of geology concerned with the structure of rocks, esp. as a guide to the… | 1933 | Go To Quotation |
| phlorizin | A crystalline compound, C 21 H 24 O 10, which is a glucoside of phloretin, occurs widely… | 1835 | Go To Quotation |
| pholidolite | A mineral said to consist of an aluminosilicate of iron, magnesium, and potassium, occurring as minute scales. | 1890 | Go To Quotation |
| phosphosiderite | A mineral of the monoclinic crystal system which consists of hydrated ferric phosphate… | 1890 | Go To Quotation |
| pickeringite | A mineral that is a monoclinic hydrated sulphate of aluminium and magnesium, MgAl 2 (SO 4)… | 1844 | Go To Quotation |
| pinakiolite | A mineral that is a borate of manganese and magnesium, Mg 2 MnO 2 (BO 3), occurring… | 1891 | Go To Quotation |
| pinguite | An oil-green mineral with a waxy consistency that is probably a variety of nontronite (chloropal). | 1831 | Go To Quotation |
| pinite | A sweet-tasting carbohydrate, C 7 H 14 O 6, that is a methyl derivative of inositol… | 1856 | Go To Quotation |
| pirssonite | A mineral of the orthorhombic crystal system which consists of an hydrated carbonate of… | 1896 | Go To Quotation |
| pisanite | A mineral which consists of an hydrated sulphate of iron and copper, (Fe,Cu)SO 4.7H 2 O, and… | 1861 | Go To Quotation |
| planetology | The branch of science that deals with planets and their evolution. | 1865 | Go To Quotation |
| plicatulate | Minutely plicate; having narrow, closely spaced folds or ridges. | 1847 | Go To Quotation |
| Pliohippus | A genus of horses having a single toe on each foot (like modern horses), known from… | 1874 | Go To Quotation |
| plumagery | The art of working with feathers. | 1854 | Go To Quotation |
| plumbagin | A bitter, yellow, crystalline compound, present in the roots of plants of the genus Plumbago… | 1830 | Go To Quotation |
| polariscope | An instrument for showing the polarization of light, or for viewing objects in polarized light; a polarimeter. | 1829 | Go To Quotation |
| polycrase | A mineral (belonging to the orthorhombic crystal system but usually metamict) that consists… | 1845 | Go To Quotation |
| Polythalamia | With pl. concord. A former division of rhizopods with polythalamous shells, which… | 1844 | Go To Quotation |
| Polythalamian | Of or relating to the former division Polythalamia of rhizopods (cf. Polythalamia n.). | 1844 | Go To Quotation |
| postpubic | Posterior to the pubis; spec. of, relating to, or designating the postpubis. | 1878 | Go To Quotation |
| postpubis | The posterior or postacetabular part of the pubis, esp. when large, as in some dinosaurs. Cf. prepubis n. 1. | 1879 | Go To Quotation |
| powellite | An uncommon mineral of the tetragonal crystal system which consists of calcium molybdate… | 1891 | Go To Quotation |
| priceite | A mineral of the triclinic crystal system which consists of a hydrated calcium borate, Ca 4 B… | 1873 | Go To Quotation |
| prionodont | Zool. In the shell of a bivalve: designating a type of hinge in which a series of teeth… | 1889 | Go To Quotation |
| prochlorite | A mineral now recognized as a ferroan variety of clinochlore. Also called ripidolite. | 1867 | Go To Quotation |
| propodial | Designating a bone of the proximal or upper segment of the limb of a tetrapod (esp. a… | 1880 | Go To Quotation |
| prosthenic | Zool. In J. D. Dana's terminology: having the major locomotor appendages in the anterior… | 1863 | Go To Quotation |
| protegulum | In brachiopods: the initial or embryonic form of the shell, or of each valve of the shell. | 1891 | Go To Quotation |
| psittacinite | = mottramite n. | 1876 | Go To Quotation |
| Pteranodon | A genus of large tailless pterosaurs of the late Cretaceous, having a toothless beak, a… | 1876 | Go To Quotation |
| Pupin | attrib. and in the genitive. Designating equipment, methods, and principles introduced by… | 1900 | Go To Quotation |
| purpurite | A mineral which is a phosphate of manganese and iron and occurs as red or… | 1905 | Go To Quotation |
| pyrochlore | A niobium-containing mineral found chiefly in nepheline-syenite and pegmatitic rocks… | 1830 | Go To Quotation |
| pyroxmangite | A rare manganese-containing silicate mineral of the pyroxenoid group, found as pink… | 1913 | Go To Quotation |
| quartzless | Lacking or free from quartz. | 1871 | Go To Quotation |
| quenstedtite | A rare iron sulphate mineral occurring as white or pale to reddish violet, tabular or prismatic crystals. | 1888 | Go To Quotation |
| quetenite | A reddish-brown mineral consisting of hydrated iron and magnesium sulphate (now regarded as identical with botryogen). | 1890 | Go To Quotation |
| ralstonite | A fluoride mineral which occurs as colourless or white, transparent to… | 1871 | Go To Quotation |
| Raoult's law | Either of two related laws about solutions: (a) a law stating that the freezing point… | 1886 | Go To Quotation |
| rectorite | A clay mineral of the montmorillonite group which occurs as large, soft, white or light brown leaves or plates. | 1891 | Go To Quotation |
| reddingite | A mineral that forms an isomorphous series with phosphoferrite and occurs as… | 1878 | Go To Quotation |
| redondite | A rare phosphate mineral of the variscite group which occurs as whitish amorphous masses. | 1870 | Go To Quotation |
| retreatal | Of or relating to the contraction and retreat of ice sheets and glaciers, or the retreat of the sea as sea level falls. | 1893 | Go To Quotation |
| rezbanyite | A mineral containing bismuth, later identified with cosalite. Obs. | 1859 | Go To Quotation |
| rhabarbarin | = rhabarbaric acid n. at rhabarbaric adj. | 1824 | Go To Quotation |
| rhinocerotid | A rhinoceros or other (extinct) mammal of the family Rhinocerotidae. | 1864 | Go To Quotation |
| rhinocerotoid | An animal resembling a rhinoceros; spec. a mammal of the superfamily Rhinocerotoidea… | 1864 | Go To Quotation |
| rhodic | Of or containing rhodium, esp. in one its higher oxidation states. Cf. rhodous adj. | 1832 | Go To Quotation |
| rhythmite | Each of the repeated units in a sedimentary formation exhibiting a rhythmic structure; spec.… | 1937 | Go To Quotation |
| richellite | An amorphous iron-rich mineral occurring as reddish- or yellowish-brown masses in phosphatic sedimentary rocks. | 1883 | Go To Quotation |
| rickardite | A rare mineral consisting of copper telluride, found as brittle, metallic, purplish-red masses. | 1903 | Go To Quotation |
| rinkite | A titanium-containing silicate mineral now usually regarded as identical to mosandrite. | 1885 | Go To Quotation |
| roeblingite | A rare mineral found as an alteration product of lead ore and typically occurring as compact white masses of minute crystals. | 1897 | Go To Quotation |
| römerite | An iron-containing mineral which occurs as rust-brown to yellow crystals, typically as an oxidation product of pyrite. | 1858 | Go To Quotation |
| roscoelite | A vanadium-containing mineral of the mica group, occurring as minute greenish or brownish scales. | 1876 | Go To Quotation |
| rösslerite | A mineral which occurs as small colourless plates and typically forms an oxidized crust on arsenical deposits. | 1862 | Go To Quotation |
| Rudistae | With pl. concord. Bivalve molluscs of the extinct order Hippuritoida (or Rudistes); rudist bivalves. | 1856 | Go To Quotation |
| ruthenium | A hard, silvery-white, metallic chemical element of the platinum group, atomic number 44. Symbol Ru. | 1829 | Go To Quotation |
| sapper | A tool for cutting away sap-wood (see quots.). | 1822 | Go To Quotation |
| savite | = natrolite n. | 1852 | Go To Quotation |
| scapulette | (See quots.) | 1887 | Go To Quotation |
| schorlomite | A vitreous black silicate of titanium, iron and calcium, resembling garnet. | 1846 | Go To Quotation |
| schreibersite | A chromium sulphide, Cr 2 S 3, supposed to have been found in a meteorite. Obs. | 1846 | Go To Quotation |
| scovillite | Hydrous phosphate of cerium, yttrium, and other rare metals; rhabdophanite. | 1883 | Go To Quotation |
| self-inductance | = self-induction n. Also, the coefficient of self-induction. | 1897 | Go To Quotation |
| senarmontite | A native tri-oxide of antimony, crystalizing in colourless or greyish-white octahedrons. | 1851 | Go To Quotation |
| serimeter | A device for testing the strength of silk thread. Cf. serigraph n. 1. | 1861 | Go To Quotation |
| seybertite | A synonym of clintonite. | 1833 | Go To Quotation |
| sheridanite | A chlorite, (Mg,Al,Fe 2+) 6 (Si,Al) 4,O 10 (OH) 8, chemically similar to clinochlore but containing less silicon. | 1912 | Go To Quotation |
| sipylite | (See quots.) | 1877 | Go To Quotation |
| spangolite | A hydrated basic sulphate and chloride of copper and aluminium, Cu 6 AlSO 4 (OH) 12 Cl.3H… | 1890 | Go To Quotation |
| sperrylite | Platinum arsenide, PtAs 2, found as opaque greyish-white isometric crystals. | 1889 | Go To Quotation |
| spurrite | A monoclinic carbonate and silicate of calcium, (Ca 2 SiO 4) 2.CaCO 3, which is a product… | 1908 | Go To Quotation |
| subarid | Somewhat arid, moderately dry; having some features of an arid climate. Also (of… | 1881 | Go To Quotation |
| subcrust | attrib. Lying or taking place beneath a crust, esp. (Geol.) beneath the crust of the earth. | 1874 | Go To Quotation |
| subdeposit | A deposit (deposit n. 3) that lies beneath another layer or layers; (also) a subsidiary deposit. | 1820 | Go To Quotation |
| subsexual | Designating or relating to a type of dimorphism in plants which is associated neither… | 1862 | Go To Quotation |
| substage | A subdivision of a stage. Chiefly in Geol., with reference to stratigraphic and glacial stages: cf. stage n. 1i. | 1849 | Go To Quotation |
| surficial | Originally: of or relating to the surface of the earth (cf. superficial adj. 3a). In later use: of or relating to any surface. | 1892 | Go To Quotation |
| sussexite | A basic borate of manganese and magnesium, (Mn,Mg)BO 2 OH, found as white… | 1868 | Go To Quotation |
| syhedrite | A mineral of uncertain composition, supposed to be related to stilbite. | 1865 | Go To Quotation |
| tamarugite | Hydrous sulphate of aluminium and sodium; a sodium alum. | 1890 | Go To Quotation |
| tectonician | = tectonist n. 2. | 1951 | Go To Quotation |
| tectonite | A rock whose fabric shows evidence of differential movement during its formation. | 1933 | Go To Quotation |
| tekoretin | A resin similar to or identical with Fichtelite. | 1858 | Go To Quotation |
| Tesla | a type of induction coil invented by Tesla, employing a spark gap in place of an… | 1896 | Go To Quotation |
| Torosaurus | A genus of horned dinosaurs, occurring in the Laramie formation in U.S. | 1891 | Go To Quotation |
| triploidite | A hydrous phosphate of iron and manganese, allied to triplite n. | 1878 | Go To Quotation |
| tysonite | A rare native fluoride of the cerium metals. | 1880 | Go To Quotation |
| tyuyamunite | A hydrous uranyl vanadate of calcium, Ca(UO 2) 2 (VO 4) 2.5−8H 2 O, occurring as… | 1913 | Go To Quotation |
| underthrust | trans. To be forced underneath. Chiefly as underˈthrust adj., ˈunderthrusting n. | 1893 | Go To Quotation |
| unionite | = zoisite n. | 1849 | Go To Quotation |
| uranious | Of or containing uranium. Cf. uranous adj. 1. | 1832 | Go To Quotation |
| vermiculite | ‘Hydrous silicate of aluminium, iron, and magnesium, occurring in small foliated scales’ (Chester). | 1824 | Go To Quotation |
| vitric | Of tuff: composed chiefly of glassy material. | 1915 | Go To Quotation |
| vorticular | Of motion: Vortical, vorticose. | 1838 | Go To Quotation |
| wardite | A hydrated basic phosphate of sodium and aluminium, NaAl 3 (PO 4) 2 (OH) 4.2H 2 O, found as transparent tetragonal crystals. | 1896 | Go To Quotation |
| warwickite | A borotitanate of magnesium and iron in dark-brown acicular crystals. | 1838 | Go To Quotation |
| weissite | A copper telluride, Cu 5 Te 3, occurring (often in association with rickardite) as bluish… | 1927 | Go To Quotation |
| wheelerite | A yellowish fossil resin occurring in lignite in the cretaceous strata of New Mexico. | 1874 | Go To Quotation |
| wilkeite | A silicate and sulphate mineral of the apatite group occurring as translucent pink or yellow hexagonal crystals (see quot. 1982). | 1914 | Go To Quotation |
| Wood | The name of B. Wood (see quot. 1860) used in the possessive to designate an easily… | 1860 | Go To Quotation |
| wyomingite | Geol. A porphyritic volcanic rock, usu. of a light brown colour, which consists of… | 1897 | Go To Quotation |
| xanthitane | A mineral produced by alteration or decomposition of sphene or titanite: see quot. 1856. | 1856 | Go To Quotation |
| Zechstein | A limestone stratum of the Permian system as developed in parts of Germany, corresponding… | 1823 | Go To Quotation |
| zinciferous | Containing or producing zinc. | 1820 | Go To Quotation |
| zunyite | A fluosilicate of aluminium, occurring in transparent tetrahedral crystals. | 1885 | Go To Quotation |
| zurlite | A white or green variety of melilite. | 1826 | Go To Quotation |
