/ Dictionary / Index E eye-opening: Meaning and Definition of Find definitions for: eye-o•pen•ing Pronunciation: (ī'ō"pu-ning), [key] — adj. serving as an eyeopener; enlightening: an eye-opening investigation of government corruption. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. eyeopener eyepiece Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language