from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A colorless organic liquid, C9H8, obtained from coal tar and used in preparing synthetic resins.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The bicyclic hydrocarbon consisting of a benzene ring fused to one of cyclopentadiene.
from The Century Dictionary and Cyclopedia
- n. A colorless viscid liquid, , found in coal-tar oil. It boils at 179.5–180.5° C.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a colorless liquid hydrocarbon extracted from petroleum or coal tar and used in making synthetic resins
ind(ole) + -ene.(American Heritage® Dictionary of the English Language, Fourth Edition)