Found in the following dictionaries
OTCWL2014 (NASPA Word List 2014)
"Benzopyrene" Definition
noun
A yellow, crystalline, aromatic hydrocarbon, c20h12, that is a carcinogen found in coal tar and cigarette smoke.
Source: American Heritage Dictionary
A polycyclic aromatic hydrocarbon (having five fused benzene rings) that is both mutagenic and carcinogenic.
Source: Wiktionary
A yellow crystalline carcinogenic hydrocarbon CH found in coal tar .
Source: Merriam-Webster
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