Breadcrumb Home > Dictionary Cite Meaning of PCP Find definitions for: PCP Pronunciation: [key] phencyclidine. See Primary Care Physician. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pcp (Thesaurus) PCNB pct. Related Content Daily Word Quiz: quisling Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language