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Definition of alkene noun from the Oxford Advanced Learner's Dictionary

alkene

noun
 
/ˈælkiːn/
 
/ˈælkiːn/
(chemistry)
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  1. any of a series of gases that contain hydrogen and carbon and that have a double bond (= force of attraction) between two of the atoms of carbon
    Word Originlate 19th cent.: from alkyl (German, from Alkohol ‘alcohol’ + -yl) + -ene.
See alkene in the Oxford Advanced American Dictionary
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