/ Dictionary / Index T tpd: Meaning and Definition of Find definitions for: tpd Pronunciation: [key] tons per day. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. TPA tph Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language