/ Dictionary / Index L Lysenkoism: Meaning and Definition of Find definitions for: Ly•sen•ko•ism Pronunciation: (li-seng'kō-iz"um), [key] — n. a genetic doctrine formulated by Lysenko and asserting that acquired characteristics are inheritable. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Lysenko lysergic acid 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