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cyclodiene

[sahy-kluh-dahy-een, -dahy-een] /ˌsaɪ kləˈdaɪ in, -daɪˈin/
noun, Chemistry
1.
any of several organic chemicals having a chlorinated methylene group bonded to two carbon atoms of a 6-membered carbon ring, used commercially in insecticides.
Origin
1940-1945
1940-45; cyclo- + diene
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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