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Ethylidene :: 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..

Myotome :: Myotome (n.) The muscular system of one metamere of an articulate.

Tautomerism :: Tautomerism (n.) The condition, quality, or relation of metameric substances, or their respective derivatives, which are more or less interchangeable, according as one form or the other is the more stable. It is a special case of metamerism; thus, the lactam and the lactim compounds exhibit tautomerism..

Trimellic :: Trimellic (a.) Of, pertaining to, or designating, a certain tribasic acid (called also trimellitic acid) metameric with trimesitic acid..

Oxybutyric :: Oxybutyric (a.) Hydroxybutyric; designating any one of a group of metameric acids (C3H6.OH.CO2H).

Metamere :: Metamere (n.) One of successive or homodynamous parts in animals and plants; one of a series of similar parts that follow one another in a vertebrate or articulate animal, as in an earthworm; a segment; a somite. See Illust. of Loeven's larva..

Xylidic :: Xylidic (a.) Pertaining to, or designating, either one of two distinct acids which are derived from xylic acid and related compounds, and are metameric with uvitic acid..

Xylene :: Xylene (n.) Any of a group of three metameric hydrocarbons of the aromatic series, found in coal and wood tar, and so named because found in crude wood spirit. They are colorless, oily, inflammable liquids, C6H4.(CH3)2, being dimethyl benzenes, and are called respectively orthoxylene, metaxylene, and paraxylene. Called also xylol..

Viridine :: 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..

Crocose :: Crocose (n.) A white crystalline sugar, metameric with glucose, obtained from the coloring matter of saffron..

Segment :: Segment (n.) One of the divisions, rings, or joints into which many animal bodies are divided; a somite; a metamere; a somatome..

Nonone :: Nonone (n.) Any one of several metameric unsaturated hydrocarbons (C9H14) of the valylene series.

Phloroglucin :: Phloroglucin (n.) A sweet white crystalline substance, metameric with pyrogallol, and obtained by the decomposition of phloretin, and from certain gums, as catechu, kino, etc. It belongs to the class of phenols. [Called also phloroglucinol.].

Thioxene :: Thioxene (n.) Any one of three possible metameric substances, which are dimethyl derivatives of thiophene, like the xylenes from benzene..

Terephthalic :: Terephthalic (a.) Of, pertaining to, or designating, a dibasic acid of the aromatic series, metameric with phthalic acid, and obtained, as a tasteless white crystalline powder, by the oxidation of oil of turpentine; -- called also paraphthalic acid. Cf. Phthalic..

Xylenol :: Xylenol (n.) Any one of six metameric phenol derivatives of xylene, obtained as crystalline substances, (CH3)2.C6H3.OH..

Cresol :: Cresol (n.) Any one of three metameric substances, CH3.C6H4.OH, homologous with and resembling phenol. They are obtained from coal tar and wood tar, and are colorless, oily liquids or solids. [Called also cresylic acid.].

Isorcin :: Isorcin (n.) A crystalline hydrocarbon derivative, metameric with orcin, but produced artificially; -- called also cresorcin..

Somite :: Somite (n.) One of the actual or ideal serial segments of which an animal, esp. an articulate or vertebrate, is is composed; somatome; metamere..

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

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