/ Dictionary / Index L leuko-: Meaning and Definition of Find definitions for: leuko- Pronunciation: [key] a combining form with the meanings “white,” “white blood cell,” used in the formation of compound words: leukopoiesis; leukotomy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. leukemid leukoblast Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language