Definitions for olefinˈoʊ lə fɪn; ˈoʊ lə fɪn, -ˌfin
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Random House Webster's College Dictionary
o•le•finˈoʊ lə fɪn; ˈoʊ lə fɪn, -ˌfin(n.)
also o•le•fine
Category: Chemistry
Ref: alkene.
Origin of olefin:
1855–60; < F (gaz) oléf(iant) ethylene
o`le•fin′ic(adj.)
Princeton's WordNet
alkene, olefine, olefin(noun)
any unsaturated aliphatic hydrocarbon
Wiktionary
olefin(Noun)
Any of a class of unsaturated open-chain hydrocarbons such as ethylene; an alkene with only one carbon-carbon double bond.
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