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pyrheliometer
pyric
pyridine
pyridoxal
pyridoxamine
pyridoxine
pyriform
pyrimethamine
pyrimidine
pyrite
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pyrocatechol
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pyrene (2)

py·rene [ p rn ]


noun 
Definition:
 
multi-ringed hydrocarbon compound: a solid, crystalline, colorless to yellow, multiple-ringed hydrocarbon compound that has been shown to be carcinogenic. Source: coal tar. C16H10

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