Breadcrumb Home > Dictionary > Index C cost-of-living index: Meaning and Definition of Find definitions for: cost'-of-liv'ing in"dex Pronunciation: [key] a former term for Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cost of living costotome ✖ Related Content Daily Word Quiz: donnybrook Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language