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alkene

noun

al·​kene ˈal-ˌkēn How to pronounce alkene (audio)
: any of numerous unsaturated hydrocarbons having one double bond
specifically : any of a series of open-chain hydrocarbons CnH2n (such as ethylene)

Word History

Etymology

International Scientific Vocabulary alkyl + -ene

First Known Use

1884, in the meaning defined above

Time Traveler
The first known use of alkene was in 1884

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