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cycloolefin

[sahy-kloh-oh-luh-fin, sik-loh-] /ˌsaɪ kloʊˈoʊ lə fɪn, ˌsɪk loʊ-/
noun, Chemistry
1.
any of the homologous series of unsaturated, alicyclic hydrocarbons, as cyclooctatetraene and cyclopentadiene, containing one double bond in the ring and having the general formula C 11 H 2n−2 .
Origin
1920-1925
1920-25; cyclo- + olefin
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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