PYRIDINE

pyridine

(noun) a toxic colorless flammable liquid organic base with a disagreeable odor; usually derived from coal

Source: WordNet® 3.1


Etymology

Noun

pyridine (plural pyridines)

(organic compound) Any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and an nitrogen atom; especially the simplest one, C5H5N.

Source: Wiktionary


Pyr"i*dine, n. Etym: [From Gr. (Physiol. Chem.)

Definition: 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 ptomaïnes, may be mentioned. See Lutidine.

Source: Webster’s Unabridged Dictionary 1913 Edition



RESET




Word of the Day

17 June 2025

RECREANT

(adjective) having deserted a cause or principle; “some provinces had proved recreant”; “renegade supporters of the usurper”


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Coffee Trivia

Plain brewed coffee contains almost no calories, while coffee with dairy products, sugar, and other flavorings is much higher in calories. An espresso has 20 calories. A nonfat latte has 72, while a flavored one has 134.

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