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Adjacent Words

pyretic
Pyretology
Pyrex
pyrexia
Pyrexiae
pyrexial
pyrexic
Pyrexical
Pyrgom
pyrheliometer
pyrheliometric
Pyridic
Pyridium
pyridostigmine
pyridostigmine bromide
pyridoxal
pyridoxamine
pyridoxine
Pyridyl
pyrie
Pyriform
pyriform area
pyriform lobe
pyrilamine
pyrimethamine

pyridine definitions

WordNet (r) 3.0 (2005)

n
1: a toxic colorless flammable liquid organic base with a disagreeable odor; usually derived from coal

Merriam Webster's

noun Etymology: pyr- + -ide + 2-ine Date: 1851 a toxic water-soluble flammable liquid base C5H5N of pungent odor that is the parent of many naturally occurring organic compounds and is used as a solvent and as a denaturant for alcohol and in the manufacture of pharmaceuticals and waterproofing agents

Oxford Reference Dictionary

n. Chem. a colourless volatile odorous liquid, formerly obtained from coal tar, used as a solvent and in chemical manufacture. Usage: Chem. formula: C5H5N Etymology: Gk pur fire + -ID(4) + -INE(4)

Webster's 1913 Dictionary

Pyridine Pyr"i*dine, n. [From Gr. ? fire.] (Physiol. Chem.) 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 ptoma["i]nes, may be mentioned. See Lutidine.



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