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Vinyl :: Vinyl (n.) The hypothetical radical C2H3, regarded as the characteristic residue of ethylene and that related series of unsaturated hydrocarbons with which the allyl compounds are homologous..

Residue :: Residue (n.) That which remains of a molecule after the removal of a portion of its constituents; hence, an atom or group regarded as a portion of a molecule; -- used as nearly equivalent to radical, but in a more general sense..

Antimonate :: Antimonate (n.) A compound of antimonic acid with a base or basic radical.

Hydroxide :: Hydroxide (n.) A hydrate; a substance containing hydrogen and oxygen, made by combining water with an oxide, and yielding water by elimination. The hydroxides are regarded as compounds of hydroxyl, united usually with basic element or radical; as, calcium hydroxide ethyl hydroxide..

Imido :: Imido (a.) Pertaining to, containing, or combined with, the radical NH, which is called the imido group..

Sulphinic :: Sulphine (n.) Any one of a series of basic compounds which consist essentially of sulphur united with hydrocarbon radicals. In general they are oily or crystalline deliquescent substances having a peculiar odor; as, trimethyl sulphine, (CH3)3S.OH. Cf. Sulphonium..

Radical :: Radical (a.) Of or pertaining to a radix or root; as, a radical quantity; a radical sign. See below..

Phenyl :: Phenyl (n.) A hydrocarbon radical (C6H5) regarded as the essential residue of benzene, and the basis of an immense number of aromatic derivatives..

Formyl :: Formyl (n.) A univalent radical, H.C:O, regarded as the essential residue of formic acid and aldehyde..

Benzal :: Benzal (n.) A compound radical, C6H5.CH, of the aromatic series, related to benzyl and benzoyl; -- used adjectively or in combination..

Maleyl :: Maleyl (n.) A hypothetical radical derived from maleic acid.

Ditolyl :: Ditolyl (n.) A white, crystalline, aromatic hydrocarbon, C14H14, consisting of two radicals or residues of toluene..

Polybasic :: Polybasic (a.) Capable of neutralizing, or of combining with, several molecules of a monacid base; having several hydrogen atoms capable of being replaced by basic radicals; -- said of certain acids; as, sulphuric acid is polybasic..

Tribasic :: Tribasic (a.) Capable of neutralizing three molecules of a monacid base, or their equivalent; having three hydrogen atoms capable of replacement by basic elements on radicals; -- said of certain acids; thus, citric acid is a tribasic acid..

Ethyl :: Ethyl (n.) A monatomic, hydrocarbon radical, C2H5 of the paraffin series, forming the essential radical of ethane, and of common alcohol and ether..

Anhydride :: Anhydride (n.) An oxide of a nonmetallic body or an organic radical, capable of forming an acid by uniting with the elements of water; -- so called because it may be formed from an acid by the abstraction of water..

Triglyceride :: Triglyceride (n.) A glyceride formed by the replacement of three hydrogen atoms in glycerin by acid radicals.

Sans-culotte :: Sans-culotte (n.) Hence, an extreme or radical republican; a violent revolutionist; a Jacobin..

Metalammonium :: Metalammonium (n.) A hypothetical radical derived from ammonium by the substitution of metallic atoms in place of hydrogen.

Amidogen :: Amidogen (n.) A compound radical, NH2, not yet obtained in a separate state, which may be regarded as ammonia from the molecule of which one of its hydrogen atoms has been removed; -- called also the amido group, and in composition represented by the form amido..

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