[ oh-luh-fin ]
/ ˈoʊ lə fɪn /

noun Chemistry.

any member of the alkene series.
Also o·le·fine [oh-luh-fin, -feen] /ˈoʊ lə fɪn, -ˌfin/.

Origin of olefin

1855–60; < French oléf(iant) (see olefiant gas) + -in2

Related forms

o·le·fin·ic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for olefin


[ ōlə-fĭn ]


Any of a group of unsaturated open chain hydrocarbons possessing one or more double bonds, the simplest of which is ethylene.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for olefin


[ ōlə-fĭn ]

See alkene.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.