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Pyrrol :: Pyrrol (n.) A nitrogenous base found in coal tar, bone oil, and other distillates of organic substances, and also produced synthetically as a colorless liquid, C4H5N, having on odor like that of chloroform. It is the nucleus and origin of a large number of derivatives. So called because it colors a splinter of wood moistened with hydrochloric acid a deep red..

Pyr- :: Pyr- () Combining forms designating fire or heat; specifically (Chem.), used to imply an actual or theoretical derivative by the action of heat; as in pyrophosphoric, pyrosulphuric, pyrotartaric, pyrotungstic, etc..

Hydrocarbostyril :: Hydrocarbostyril (n.) A white, crystalline, nitrogenous hydrocarbon, C9H9NO, obtained from certain derivatives of cinnamic acid and closely related to quinoline and carbostyril..

Thienyl :: Thienyl (n.) The hypothetical radical C4H3S, regarded as the essential residue of thiophene and certain of its derivatives..

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..

Piperylene :: Piperylene (n.) A hydrocarbon obtained by decomposition of certain piperidine derivatives.

Thienone :: Thienone (n.) A ketone derivative of thiophene obtained as a white crystalline substance, (C4H3S)2.CO, by the action of aluminium chloride and carbonyl chloride on thiophene..

Phloramine :: Phloramine (n.) A basic amido derivative of phloroglucin, having an astringent taste..

Niteosaccharin :: Niteosaccharin (n.) An explosive nitro derivative of certain sugars, analogous to nitroglycerin, gun cotton, etc..

Xanthide :: Xanthide (n.) A compound or derivative of xanthogen.

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..

Sulphamide :: Sulphamic (a.) Of or pertaining to a sulphamide; derived from, or related to, a sulphamide; specifically, designating an amido acid derivative, NH2.SO2.OH, of sulphuric acid (analogous to sulphonic acid) which is not known in the free state, but is known in its salts..

Imide :: Imide (n.) A compound with, or derivative of, the imido group; specif., a compound of one or more acid radicals with the imido group, or with a monamine; hence, also, a derivative of ammonia, in which two atoms of hydrogen have been replaced by divalent basic or acid radicals; -- frequently used as a combining form; as, succinimide..

Codeine :: Codeine (n.) One of the opium alkaloids; a white crystalline substance, C18H21NO3, similar to and regarded as a derivative of morphine, but much feebler in its action; -- called also codeia..

Derivate :: Derivate (a.) Derived; derivative.

Subdiaconate :: Subderivative (n.) A word derived from a derivative, and not directly from the root; as, friendliness is a subderivative, being derived from friendly, which is in turn a derivative from friend..

Violuric :: Violuric (a.) Of, pertaining to, or designating, a complex nitroso derivative of barbituric acid. It is obtained as a white or yellow crystalline substance, and forms characteristic yellow, blue, and violet salts..

Quinoxaline :: Quinoxaline (n.) Any one of a series of complex nitrogenous bases obtained by the union of certain aniline derivatives with glyoxal or with certain ketones.

Formative :: Formative (a.) Serving to form; derivative; not radical; as, a termination merely formative..

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

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