/ Dictionary / Index E expertism: Meaning and Definition of Find definitions for: ex•pert•ism Pronunciation: (ek'spur-tiz"um), [key] — n. expertness or skill, esp. in a specific field. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. expertise expertize 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