an aromatic hydrocarbon, CH, found in coal tar, cigarette smoke, etc. and known to be a cause of cancer in animals
sometimes called benz·py′rene
Origin of benzopyrenebenzo- + pyrene
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 .