from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of the dark organic constituents of crude oils and bitumen that are soluble in aromatic solvents but not in aliphatic ones; they are polycyclic aromatic compounds (composed of fused benzene rings) with aliphatic side chains
from The Century Dictionary and Cyclopedia
- n. A name originally given by Boussingault to a residue left on distilling asphalt from an oil-bath.
Sorry, no etymologies found.