Search the Dictionary

A nitrogenous base, C5H5N, obtained from the distillation of bone oil or coal tar, and by the decomposition of certain alkaloids, as a colorless liquid with a peculiar pungent odor. It is the nucleus of a large number of organic substances, among which several vegetable alkaloids, as nicotine and certain of the ptomaïn…

A polymeric form of pyridine, C10H10N2, obtained as a colorless oil by the action of sodium on pyridine.

s in the manufacture of bone black), and remarkable for containing the nitrogenous bases, pyridine and quinoline, and their derivatives; -- also called Dippel's oil. -- Bone setter. Same as Bonesetter. See in the Vocabulary. -- Bone shark (Zoöl.), the basking shark. -- Bone spavin. See under Spavin. -- Bone turquoi…

An oil obtained by distillation of peat, and containing various members of the pyridine series.

One of a class of organic bases, C8H11N, usually pungent oily liquids, belonging to the pyridine series, and obtained from bone oil, coal tar, naphtha, and certain alkaloids.

A blue, fluorescent, oily base (regarded as a derivative of pyridine), obtained from conine.

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. [Written also corindine.]

A crystalline nitrogenous base, C10H8N2, obtained by the reduction of pyridine.

enous substance, forming a heavy, sandy powder, white or nearly so. It is a derivative of pyridine.

Any one of several metameric alkaloids, C5H3N.(CH3)2, of the pyridine series, obtained from bone oil as liquids, and having peculiar pungent odors. These alkaloids are also called respectively dimethyl pyridine, ethyl pyridine, etc.

base, isomeric with nicotine, and obtained by the reduction of certain derivatives of the pyridine group.

or derived from, nicotine; nicotic; -- used specifically to designate an acid related to pyridine, obtained by the oxidation of nicotine, and called nicotinic acid.

c odor, and a physiological action resembling that of atropine. It is probably related to pyridine.

Any one of three isometric bases (C6H7N) related to pyridine, and obtained from bone oil, acrolein ammonia, and coal-tar naphtha, as colorless mobile liquids of strong odor; -- called also methyl pyridine.

An oily liquid alkaloid, C5H11N, having a hot, peppery, ammoniacal odor. It is related to pyridine, and is obtained by the decomposition of piperine.

A hypothetical radical, C5H4N, regarded as the essential residue of pyridine, and analogous to phenyl.

mula (Chem.), a graphic formula in the shape of a closed ring, as in the case of benzene, pyridine, etc. See Illust. under Benzene. -- Ring mail, a kind of mail made of small steel rings sewed upon a garment of leather or of cloth. -- Ring micrometer. (Astron.) See Circular micrometer, under Micrometer. -- Saturn's…

A nitrogenous base homologous with pyridine, obtained from coal tar as an oily liquid, C11H17N; also, any one of the group od metameric compounds of which rubidine is the type.

ting of a mixture of several metameric compounds which are higher derivatives of the base pyridine.