/ Dictionary / Index L Leonov: Meaning and Definition of Find definitions for: Le•o•nov Pronunciation: (lē-ō'nôf, -nof Russ. lyi-ô'n&schwaf&hasp), [key] — n. born 1934, Soviet cosmonaut: first man to walk in space 1965. born 1899, Russian writer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Leonora leontiasis Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language