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.
- supercede
- supercede
- superceder
- supercell
- supercession
- supercharge
- supercharged
- supercharger
- superciliary
- supercilious
- superciliously
- superciliousness
- superclass
- supercluster
- supercoil
- supercollider
- supercolony
- supercomputer
- superconduct
- superconducting
- superconductive
- superconductivity
- superconductor
- supercontinent
- supercool