from The American Heritage® Dictionary of the English Language, 4th Edition
- n. See acetylene.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The official IUPAC name for the organic chemical compound acetylene. The simplest alkyne, a colorless gaseous (at room temperature and pressure) hydrocarbon with the chemical formula C2H2.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a colorless flammable gas used chiefly in welding and in organic synthesis
Sorry, no etymologies found.
Ideally, of course, you would also know many of the answers - that the Battle of Chickamauga happened in 1863, or that acetylene is the common name of ethyne - but, for most of us, that's the hardest part.
(, no inhibition by ethyne )  Cofactors/prosthetic groups FAD