diene

noun
di·ene | \ˈdī-ˌēn \

Definition of diene 

: a compound containing two double bonds between carbon atoms

First Known Use of diene

1917, in the meaning defined above

History and Etymology for diene

di- + -ene

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The first known use of diene was in 1917

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Britannica.com: Encyclopedia article about diene

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