/ Dictionary / Index C Chatham Islands: Meaning and Definition of Find definitions for: Chat'ham Is'lands Pronunciation: [key] a group of islands in the S Pacific, E of and belonging to New Zealand. 372 sq. mi. (963 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Chatham chaton Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language