/ Dictionary / Index P pps: Meaning and Definition of Find definitions for: pps Pronunciation: [key] pulse per second. P.P.S. Pronunciation: [key] a second or additional postscript. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ppr. ppt. Related Content Daily Word Quiz: abdicate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language