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Any of three isomeric liquids, C6H7N, related to pyridine and derived from coal tar, horse urine, and rendered bones, that are variously used as industrial solvents, waterproofing agents, intermediates in dyes and resins, and in the synthesis of picolinic acid and niacin.
(Elements & Compounds) a liquid derivative of pyridine found in bone oil and coal tar; methylpyridene. Formula: C5H4N(CH3)
[C19: from Latin pic-, pix pitch2 + -ol2 + -ine2]
pic•o•line(ˈpɪk əˌlin, -lɪn)
any of three liquid isomers of pyridine having the formula C6H7N, obtained from coal tar and used as a solvent.