/ Dictionary / Index A Aetna: Meaning and Definition of Find definitions for: Aet•na Pronunciation: (et'nu), [key] — n. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aetiology Aetolia Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language