/ Dictionary / Index E expertize: Meaning and Definition of Find definitions for: ex•pert•ize Pronunciation: (ek'spur-tīz"), [key] — -ized, -iz•ing. to study or investigate as an expert. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. expertism expert system Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language