/ Dictionary / Index C Chagos Archipelago: Meaning and Definition of Find definitions for: Cha'gos Archipel'ago Pronunciation: (chä'gōs, -gus), [key] a group of islands in the British Indian Ocean Territory. ab. 75 sq. mi. (195 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Chagatai Chagres Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language