from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A yellow, crystalline, aromatic hydrocarbon, C20H12, that is a carcinogen found in coal tar and cigarette smoke.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A polycyclic aromatic hydrocarbon (having five fused benzene rings) that is both mutagenic and carcinogenic
Sorry, no etymologies found.