/ 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: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language