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pyralid
pyramid
pyramid scheme
pyramid selling
pyramidal peak
pyramidal tract
Pyramus and Thisbe
pyran
pyranose
pyrargyrite
pyrazine
pyrazole
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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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