/ Dictionary / Index P PHS: Meaning and Definition of Find definitions for: PHS Pronunciation: [key] Public Health Service. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: phs (Thesaurus) Phrygian mode phthalein Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language