/ Dictionary / Index P PS: Meaning and Definition of Find definitions for: PS Pronunciation: [key] phrase structure. power steering. ps Pronunciation: [key] picosecond; picoseconds. Ps. Pronunciation: [key] Psalm; Psalms. ps. Pronunciation: [key] pieces. pseudonym. P.S. Pronunciation: [key] passenger steamer. permanent secretary. postscript. Privy Seal. See Public School. p.s. Pronunciation: [key] postscript. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ps (Thesaurus) Przewalski's horse PSA Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language