/ Dictionary / Index E E.A.A.: Meaning and Definition of Find definitions for: E.A.A. Pronunciation: [key] Engineer in Aeronautics and Astronautics. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ea each Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language