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metameric
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- Metameric - a. - Having the same elements united in the same proportion by weight, and with the same molecular weight, but possessing a different structure and different properties; as, methyl ether and ethyl alcohol are metameric compounds. See Isomeric.
- Metameric - a. - Of or pertaining to a metamere or its formation; as, metameric segmentation.
- Metamerically - adv. - In a metameric manner.
- Amylene - n. - One of a group of metameric hydrocarbons, C5H10, of the ethylene series. The colorless, volatile, mobile liquid commonly called amylene is a mixture of different members of the group.
- Neuromere - n. - A metameric segment of the cerebro-spinal nervous system.
- Lepidine - n. - An organic base, C9H6.N.CH3, metameric with quinaldine, and obtained by the distillation of cinchonine.
- Thioxene - n. - Any one of three possible metameric substances, which are dimethyl derivatives of thiophene, like the xylenes from benzene.
- Metamerism - n. - The symmetry of a metameric structure; serial symmetry; the state of being made up of metameres.
- Xylidine - n. - Any one of six metameric hydrocarbons, (CH3)2.C6H3.NH2, resembling aniline, and related to xylene. They are liquids, or easily fusible crystalline substances, of which three are derived from metaxylene, two from orthoxylene, and one from paraxylene. They are called the amido xylenes.
- Ethylidene - - An unsymmetrical, divalent, hydrocarbon radical, C2H4 metameric with ethylene but written thus, CH3.CH to distinguish it from the symmetrical ethylene, CH2.CH2. Its compounds are derived from aldehyde. Formerly called also ethidene.
- Toluidine - n. - Any one of three metameric amido derivatives of toluene analogous to aniline, and called respectively orthtoluidine, metatoluidine, and paratoluidine; especially, the commonest one, or paratoluidine, which is obtained as a white crystalline substance.
- Heptine - n. - Any one of a series of unsaturated metameric hydrocarbons, C7H12, of the acetylene series.
- Coridine - n. - A colorless or yellowish oil, C10H15N, of a leathery odor, occuring in coal tar, Dippel's oil, tobacco smoke, etc., regarded as an organic base, homologous with pyridine. Also, one of a series of metameric compounds of which coridine is a type.
- Nonone - n. - Any one of several metameric unsaturated hydrocarbons (C9H14) of the valylene series.
- Pseudo-cumene - n. - A hydrocarbon of the aromatic series, metameric with mesitylene and cumene, found in coal tar, and obtained as a colorless liquid.
- Valeric - a. - Valerianic; specifically, designating any one of three metameric acids, of which the typical one (called also inactive valeric acid), C4H9CO2H, is obtained from valerian root and other sources, as a corrosive, mobile, oily liquid, having a strong acid taste, and an odor of old cheese.
- Crocose - n. - A white crystalline sugar, metameric with glucose, obtained from the coloring matter of saffron.
- Isorcin - n. - A crystalline hydrocarbon derivative, metameric with orcin, but produced artificially; -- called also cresorcin.
- Quartenylic - a. - Pertaining to, or designating, an acid of the acrylic acid series, metameric with crotonic acid, and obtained as a colorless liquid; -- so called from having four carbon atoms in the molecule. Called also isocrotonic acid.
- Xylylene - n. - Any one of three metameric radicals, CH2.C6H4.CH2, derived respectively from the three xylenes. Often used adjectively; as, xylylene alcohol.
- Phenanthroline - n. - Either of two metameric nitrogenous hydrocarbon bases, C12H8N2, analogous to phenanthridine, but more highly nitrogenized.
- Oxybutyric - a. - Hydroxybutyric; designating any one of a group of metameric acids (C3H6.OH.CO2H).
- Trimellic - a. - Of, pertaining to, or designating, a certain tribasic acid (called also trimellitic acid) metameric with trimesitic acid.
- Metamer - n. - Any one of several metameric forms of the same substance, or of different substances having the same composition; as, xylene has three metamers, viz., orthoxylene, metaxylene, and paraxylene.
- Pentane - n. - Any one of the three metameric hydrocarbons, C5H12, of the methane or paraffin series. They are colorless, volatile liquids, two of which occur in petroleum. So called because of the five carbon atoms in the molecule.
- Viridine - n. - A greenish, oily, nitrogenous hydrocarbon, C12H19N7, obtained from coal tar, and probably consisting of a mixture of several metameric compounds which are higher derivatives of the base pyridine.
- Octylene - n. - Any one of a series of metameric hydrocarbons (C8H16) of the ethylene series. In general they are combustible, colorless liquids.
- Xylic - a. - Pertaining to, derived from, or related to, xylene; specifically, designating any one of several metameric acids produced by the partial oxidation of mesitylene and pseudo-cumene.