/ Dictionary / Index T TRF: Meaning and Definition of Find definitions for: TRF Pronunciation: [key] thyrotropin-releasing factor. trf Pronunciation: [key] transfer. tuned radio frequency. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: trf (Thesaurus) trez-tine TRH Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language