ben·zo·py·rene 
(bĕn′zō-pīrēn′, -pī-rēn)
(bĕn′zō-pīrēn′, -pī-rēn)n.
Either of two polycyclic aromatic hydrocarbons with the formula C20H12, found in coal tar and cigarette smoke and isolatable as a white or yellow crystalline solid. Both are hazardous, and one is known to be a potent carcinogen. Also called benzpyrene.
- National Guard
- national income
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- nationalistically
- nationality
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- nationalize
- nationalizer
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- nationwide
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- native-born
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