/ Dictionary / Index A aetiology: Meaning and Definition of Find definitions for: ae•ti•ol•o•gy Pronunciation: (ē"tē-ol'u-jē), [key] — pl. -gies. etiology. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aetiology (Thesaurus) aethon Aetna Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language