/ Dictionary / Index P Pd: Meaning and Definition of Find definitions for: Pd Pronunciation: [key] — Symbol, Chem. palladium. pd. Pronunciation: [key] paid. P.D. Pronunciation: [key] per diem. Police Department. property damage. p.d. Pronunciation: [key] per diem. potential difference. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pd (Thesaurus) PCV valve PDA 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