alkene

alkene

[al-keen]
noun Chemistry.
any member of the alkene series.

Origin:
1895–1900; alk(yl) + -ene

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World English Dictionary
alkene (ˈælkiːn)
 
n
a.  olefine, Also called: olefin any unsaturated aliphatic hydrocarbon with the general formula CnH2n
 b.  Also called: olefine (as modifier): alkene series

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American Heritage
Medical Dictionary

alkene al·kene (āl'kēn')
n.
Any of a series of unsaturated, open chain hydrocarbons with one or more carbon-carbon double bonds, having the general formula CnH2n.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
alkene   (āl'kēn')  Pronunciation Key 
Any of a group of unsaturated hydrocarbons that have carbon atoms in chains linked by one or more double bonds and that have the general formula CnH2n. Lighter alkenes, such as ethylene, are derived from petroleum by cracking. Also called olefin. ◇ The group of alkenes as a whole is called the alkene series or the ethylene series. Its first five members are ethylene (or ethene), propylene (or propene), butylene (or butene), pentene, and hexene.
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