/ Dictionary / Index C chiliarch: Meaning and Definition of Find definitions for: chil•i•arch Pronunciation: (kil'ē-ärk"), [key] — n. (in ancient Greece) the military commander of 1000 men. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. chiliad chiliasm Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language