/ Dictionary / Index E Erastianism: Meaning and Definition of Find definitions for: E•ras•tian•ism Pronunciation: (i-ras'chu-niz"um, -tē-u-niz"-), [key] — n. the doctrine, advocated by Thomas Erastus, of the supremacy of the state over the church in ecclesiastical matters. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: erastianism (Thesaurus) Erastian Erastus Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language