/ Dictionary / Index L lexeme: Meaning and Definition of Find definitions for: lex•eme Pronunciation: (lek'sēm), [key] — n. Ling. a lexical unit in a language, as a word or base; vocabulary item. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lexeme (Thesaurus) Lexell lexical Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language