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[pir-i-deen, -din] /ˈpɪr ɪˌdin, -dɪn/

noun, Chemistry.
a colorless, flammable, liquid organic base, C 5 H 5 N, having a disagreeable odor, usually obtained from coal or synthesized from acetaldehyde and ammonia: used chiefly as a solvent and in organic synthesis.
a colourless hygroscopic liquid with a characteristic odour. It is a basic heterocyclic compound containing one nitrogen atom and five carbon atoms in its molecules and is used as a solvent and in preparing other organic chemicals. Formula: C5H5N

pyridine pyr·i·dine (pĭr’ĭ-dēn’)
A flammable, colorless or yellowish liquid base that results from the dry distillation of organic matter containing nitrogen, has a penetrating odor, and is used in analytical chemistry and in the manufacture of various drugs and vitamins.
py·rid’ic (pī-rĭd’ĭk) adj.


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