/ Dictionary / Index L Lysenko: Meaning and Definition of Find definitions for: Ly•sen•ko Pronunciation: (li-seng'kō Russ. li-syen'k&schwa), [key] 1898–1976, Russian biologist and agronomist. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lysenko (Thesaurus) lyse Lysenkoism Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language