/ Dictionary / Index A ageism: Meaning and Definition of Find definitions for: age•ism Pronunciation: (ā'jiz-um), [key] — n. discrimination against persons of a certain age group. a tendency to regard older persons as debilitated, unworthy of attention, or unsuitable for employment. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ageism (Thesaurus) ageing Agelaus Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language