Definition of metamer

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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..

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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..
Neo- :: Neo- () A prefix meaning new, recent, late; and in chemistry designating specifically that variety of metameric hydrocarbons which, when the name was applied, had been recently classified, and in which at least one carbon atom in connected directly with four other carbon atoms; -- contrasted with normal and iso-; as, neopentane; the neoparaffins. Also used adjectively..
Pentamethylene :: Pentamethylene (n.) A hypothetical hydrocarbon, C5H10, metameric with the amylenes, and the nucleus of a large number of derivatives; -- so named because regarded as composed of five methylene residues. Cf. Trimethylene, and Tetramethylene..
Nonane :: Nonane (n.) One of a group of metameric hydrocarbons C9H20 of the paraffin series; -- so called because of the nine carbon atoms in the molecule. Normal nonane is a colorless volatile liquid, an ingredient of ordinary kerosene..
Heptine :: Heptine (n.) Any one of a series of unsaturated metameric hydrocarbons, C7H12, of the acetylene series..
Maleic :: Maleic (a.) Pertaining to, or designating, an acid of the ethylene series, metameric with fumaric acid and obtained by heating malic acid..
Metameric :: Metameric (a.) Of or pertaining to a metamere or its formation; as, metameric segmentation..
Metameric :: 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..
Neuromere :: Neuromere (n.) A metameric segment of the cerebro-spinal nervous system.
Toluidine :: 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..
Segment :: Segment (n.) One of the divisions, rings, or joints into which many animal bodies are divided; a somite; a metamere; a somatome..
Malamide :: Malamide (n.) The acid amide derived from malic acid, as a white crystalline substance metameric with asparagine..
Met- :: Met- () Other; duplicate, corresponding to; resembling; hence, metameric; as, meta-arabinic, metaldehyde..
Glyceryl :: Glyceryl (n.) A compound radical, C3H5, regarded as the essential radical of glycerin. It is metameric with allyl. Called also propenyl..
Metamer :: 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..
Valeric :: 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..
Amylene :: 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..
Osteocomma :: Osteocomma (n.) A metamere of the vertebrate skeleton; an osteomere; a vertebra.
Oxybutyric :: Oxybutyric (a.) Hydroxybutyric; designating any one of a group of metameric acids (C3H6.OH.CO2H).
Metamerism :: Metamerism (n.) The symmetry of a metameric structure; serial symmetry; the state of being made up of metameres.
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