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Silicon :: Silicon (n.) A nonmetalic element analogous to carbon. It always occurs combined in nature, and is artificially obtained in the free state, usually as a dark brown amorphous powder, or as a dark crystalline substance with a meetallic luster. Its oxide is silica, or common quartz, and in this form, or as silicates, it is, next to oxygen, the most abundant element of the earth's crust. Silicon is characteristically the element of the mineral kingdom, as carbon is of the organic world. Symbol Si. A

Alcohol :: Alcohol (n.) A class of compounds analogous to vinic alcohol in constitution. Chemically speaking, they are hydroxides of certain organic radicals; as, the radical ethyl forms common or ethyl alcohol (C2H5.OH); methyl forms methyl alcohol (CH3.OH) or wood spirit; amyl forms amyl alcohol (C5H11.OH) or fusel oil, etc..

Kairoline :: Kairoline (n.) An organic base obtained from quinoline. It is used as a febrifuge, and resembles kairine..

Cyanuric Acid :: Cyanuric acid () an organic acid, C3O3N3H3, first obtained by heating uric acid or urea, and called pyrouric acid; afterwards obtained from isocyanic acid. It is a white crystalline substance, odorless and almost tasteless; -- called also tricarbimide..

Mauveine :: Mauveine (n.) An artificial organic base, obtained by oxidizing a mixture of aniline and toluidine, and valuable for the dyestuffs it forms..

Hierarchy :: Hierarchy (n.) A body of officials disposed organically in ranks and orders each subordinate to the one above it; a body of ecclesiastical rulers.

Structureless :: Structured (a.) Having a definite organic structure; showing differentiation of parts.

Sterlet :: Sterilize (v. t.) To destroy all spores or germs in (an organic fluid or mixture), as by heat, so as to prevent the development of bacterial or other organisms..

Paramalic :: Paramalic (a.) Pertaining to, or designating, an organic acid metameric with malic acid..

Carbon :: Carbon (n.) An elementary substance, not metallic in its nature, which is present in all organic compounds. Atomic weight 11.97. Symbol C. it is combustible, and forms the base of lampblack and charcoal, and enters largely into mineral coals. In its pure crystallized state it constitutes the diamond, the hardest of known substances, occuring in monometric crystals like the octahedron, etc. Another modification is graphite, or blacklead, and in this it is soft, and occurs in hexagonal prisms or t

Musty :: Musty (n.) Having the rank, pungent, offencive odor and taste which substances of organic origin acquire during warm, moist weather; foul or sour and fetid; moldy; as, musty corn; musty books..

Pyridine :: Pyridine (n.) A nitrogenous base, C5H5N, obtained from the distillation of bone oil or coal tar, and by the decomposition of certain alkaloids, as a colorless liquid with a peculiar pungent odor. It is the nucleus of a large number of organic substances, among which several vegetable alkaloids, as nicotine and certain of the ptomaines, may be mentioned. See Lutidine..

Collidine :: Collidine (n.) One of a class of organic bases, C8H11N, usually pungent oily liquids, belonging to the pyridine series, and obtained from bone oil, coal tar, naphtha, and certain alkaloids..

Petrifaction :: Petrifaction (n.) The process of petrifying, or changing into stone; conversion of any organic matter (animal or vegetable) into stone, or a substance of stony hardness..

Itaconic :: Itaconic (a.) Pertaining to, or designating, an acid, C5H6O4, which is obtained as a white crystalline substance by decomposing aconitic and other organic acids..

Petrify :: Petrify (v. i.) To become stone, or of a stony hardness, as organic matter by calcareous deposits..

Eudipleura :: Eudipleura (n. pl.) The fundamental forms of organic life, that are composed of two equal and symmetrical halves..

Propionic :: Propionic (a.) Pertaining to, derived from, or designating, an organic acid which is produced in the distillation of wood, in the fermentation of various organic substances, as glycerin, calcium lactate, etc., and is obtained as a colorless liquid having a sharp, pungent odor. Propionic acid is so called because it is the first or lowest member of the fatty acid series whose salts have a fatty feel..

Aniline :: Aniline (n.) An organic base belonging to the phenylamines. It may be regarded as ammonia in which one hydrogen atom has been replaced by the radical phenyl. It is a colorless, oily liquid, originally obtained from indigo by distillation, but now largely manufactured from coal tar or nitrobenzene as a base from which many brilliant dyes are made..

Organic :: Organic (a.) Pertaining to, or denoting, any one of the large series of substances which, in nature or origin, are connected with vital processes, and include many substances of artificial production which may or may not occur in animals or plants; -- contrasted with inorganic..

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