/ Dictionary / Index T trust territory: Meaning and Definition of Find definitions for: trust' ter"ritory Pronunciation: [key] a territory under the administrative control of a country designated by the United Nations. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trustor trustworthy Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language