/ Dictionary / Index K KIA: Meaning and Definition of Find definitions for: KIA Pronunciation: [key] — pl. KIA's, KIAs. killed in action. a member of the military services who has been killed in action. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ki kiabooca Related Content Daily Word Quiz: stellar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language