/ Dictionary / Index A Athanasius: Meaning and Definition of Find definitions for: Ath•a•na•sius Pronunciation: (ath"u-nā'shus), [key] — n. a.d. 296?–373, bishop of Alexandria: opponent of Arianism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: athanasius (Thesaurus) Athanasian Creed athanor Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language