/ Dictionary / Index A Alethia: Meaning and Definition of Find definitions for: Al•e•thi•a Pronunciation: (al"u-thē'u), [key] — n. the ancient Greek personification of truth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Alethea alethiology Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language