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[loo-kuh-trahy-een] /ˌlu kəˈtraɪ in/
noun, Biochemistry.
a lipid, C 20 H 30 O 3 , produced by white blood cells in an immune response to antigens, that contributes to allergic asthma and inflammatory reactions.
Origin of leukotriene
1975-80; leuko- + triene Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for leukotriene


one of a class of products of metabolic conversion of arachidonic acid; the active constituents of slow-reacting substance, responsible for bronchial constriction, contraction of smooth muscle, and inflammatory processes
Word Origin
C20: from leukocyte, in which they were discovered + triene from the conjugated triene unit that they contain
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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leukotriene in Medicine

leukotriene leu·ko·tri·ene (lōō'kə-trī'ēn')
Any of a group of physiologically active substances that possibly function as mediators of inflammation and as participants in allergic responses.

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