/ Dictionary / Index E echoism: Meaning and Definition of Find definitions for: ech•o•ism Pronunciation: (ek'ō-iz"um), [key] — n. onomatopoeia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. echoic echolalia Related Content Daily Word Quiz: boorish Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language