/ Dictionary / Index P PRF: Meaning and Definition of Find definitions for: PRF Pronunciation: [key] Puerto Rican female. pulse repetition frequency. prf. Pronunciation: [key] proof. Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease. prez Priam Related Content Daily Word Quiz: wizened Analogy of the Day: Today?s Analogy Spelling Bee: Today?s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language