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Met- :: Met- () Other; duplicate, corresponding to; resembling; hence, metameric; as, meta-arabinic, metaldehyde..

Heterology :: Heterology (n.) The connection or relation of bodies which have partial identity of composition, but different characteristics and properties; the relation existing between derivatives of the same substance, or of the analogous members of different series; as, ethane, ethyl alcohol, acetic aldehyde, and acetic acid are in heterology with each other, though each in at the same time a member of a distinct homologous series. Cf. Homology..

Quinaldine :: Quinaldine (n.) A colorless liquid of a slightly pungent odor, C9H6N.CH3, first obtained as a condensation product of aldehyde and aniline, and regarded as a derivative of quinoline; -- called also methyl quinoline..

Lophine :: Lophine (n.) A nitrogenous organic base obtained by the oxidation of amarine, and regarded as a derivative of benzoic aldehyde. It is obtained in long white crystalline tufts, -- whence its name..

Oenanthol :: Oenanthol (n.) An oily substance obtained by the distillation of castor oil, recognized as the aldehyde of oenanthylic acid, and hence called also oenanthaldehyde..

Mercaptal :: Mercaptal (n.) Any one of a series of compounds of mercaptans with aldehydes.

Valeridine :: Valeridine (n.) A base, C10H19N, produced by heating valeric aldehyde with ammonia. It is probably related to the conine alkaloids..

Oxymethylene :: Oxymethylene (n.) Formic aldehyde, regarded as a methylene derivative..

Para- :: Para- () A prefix denoting: (a) Likeness, similarity, or connection, or that the substance resembles, but is distinct from, that to the name of which it is prefixed; as paraldehyde, paraconine, etc.; also, an isomeric modification. (b) Specifically: (Organ. Chem.) That two groups or radicals substituted in the benzene nucleus are opposite, or in the respective positions 1 and 4; 2 and 5; or 3 and 6, as paraxylene; paroxybenzoic acid. Cf. Ortho-, and Meta-. Also used adjectively..

Reduction :: Reduction (v. t.) The act, process, or result of reducing; as, the reduction of iron from its ores; the reduction of aldehyde from alcohol..

Aldehydic :: Aldehydic (a.) Of or pertaining to aldehyde; as, aldehydic acid..

Carbonyl :: Carbonyl (n.) The radical (CO)'', occuring, always combined, in many compounds, as the aldehydes, the ketones, urea, carbonyl chloride, etc..

Trigenic :: Trigenic (a.) Of, pertaining to, or designating, an acid, C4H7N3O2, obtained, by the action of the vapor of cyanic acid on cold aldehyde, as a white crystalline substance having a slightly acid taste and faint smell; -- called also ethidene- / ethylidene-biuret..

Vanillic :: Vanillic (a.) Pertaining to, or derived from, vanilla or vanillin; resembling vanillin; specifically, designating an alcohol and an acid respectively, vanillin being the intermediate aldehyde..

Benzoin :: Benzoin (n.) A white crystalline substance, C14H12O2, obtained from benzoic aldehyde and some other sources..

Paraconine :: Paraconine (n.) A base resembling and isomeric with conine, and obtained as a colorless liquid from butyric aldehyde and ammonia..

Paraldehyde :: Paraldehyde (n.) A polymeric modification of aldehyde obtained as a white crystalline substance.

Vanillin :: Vanillin (n.) A white crystalline aldehyde having a burning taste and characteristic odor of vanilla. It is extracted from vanilla pods, and is also obtained by the decomposition of coniferin, and by the oxidation of eugenol..

Unsaturated :: Unsaturated (a.) Capable of taking up, or of uniting with, certain other elements or compounds, without the elimination of any side product; thus, aldehyde, ethylene, and ammonia are unsaturated..

Glyoxal :: Glyoxal (n.) A white, amorphous, deliquescent powder, (CO.H)2, obtained by the partial oxidation of glycol. It is a double aldehyde, between glycol and oxalic acid..

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