From The Collaborative International Dictionary of English v.0.48 [gcide]:
Acetylene \A*cet"y*lene\, noun (Chem.) A gaseous compound of carbon and hydrogen, in the proportion of two atoms of the former to two of the latter. It is a colorless gas, with a peculiar, unpleasant odor, and is produced for use as an illuminating gas in a number of ways, but chiefly by the action of water on calcium carbide. Its light is very brilliant. --Watts. Ach
From WordNet (r) 3.0 (2006) [wn]:
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