/ Dictionary / Index T third-party insurance: Meaning and Definition of Find definitions for: third'-par'ty insur"ance Pronunciation: (thûrd'pär'tē), [key] insurance that compensates for a loss to a party other than the insured for which the insured is liable. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. third party third party procedure Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language