/ Dictionary / Index C chiliasm: Meaning and Definition of Find definitions for: chil•i•asm Pronunciation: (kil'ē-az"um), [key] — n. Theol. the doctrine of Christ's expected return to reign on earth for 1000 years; millennialism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: chiliasm (Thesaurus) chiliarch chiliburger Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language