pyridine

1. n. 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 ptomaines, may be mentioned. See Lutidine. Source: opted

2. n. a toxic colorless flammable liquid organic base with a disagreeable odor; usually derived from coal Source: wordnet

3. 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

4. A nitrogenous base, C5H5N, obtained from the distillation ofbone oil or coal tar, and by the decomposition of certain alkaloids,as a colorless liquid with a peculiar pungent odor. It is the nucleusof a large number of organic substances, among which severalvegetable alkaloids, as nicotine and certain of the ptomaïnes, may bementioned. See Lutidine. Source: adambom

5. n. a toxic colorless flammable liquid organic base with a disagreeable odor; usually derived from coal Source: ecdict

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