n.
Pronunciation: ˌ ben-z ō - ' p ī - ˌ r ē n, -p ī - ' r ē n
Function: noun
Etymology: International Scientific Vocabulary benz- + pyrene a crystalline hydrocarbon C 16 H 10 , from pyr- + -ene
Date: 1936
: a yellow crystalline carcinogenic hydrocarbon C 20 H 12 found in coal tar ― called also benzo[a]pyrene