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Pyrenees
pyrethrin
pyrethrum
pyretic
Pyrex
pyrexia
pyrheliometer
pyric
pyridine
pyridoxal
pyridoxamine
pyridoxine
pyriform
pyrimethamine
pyrimidine
pyrite
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pyridine

pyr·i·dine [ pírri dn ]


noun 
Definition:
 
flammable industrial chemical: a toxic flammable liquid with a noxious smell. Source: bone oil, coal tar. Use: manufacture of chemicals, pharmaceuticals, and paints, textile dyeing. C5H5N

[Mid-19th century. < Greek pur "fire"]
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