/ Dictionary / Index L leukotriene: Meaning and Definition of Find definitions for: leu•ko•tri•ene Pronunciation: (l"ku-trī'ēn), [key] — n. Biochem. a lipid, CHO, produced by white blood cells in an immune response to antigens, that contributes to allergic asthma and inflammatory reactions. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. leukotomy Leuricus Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language