/ Dictionary / Index P processing tax: Meaning and Definition of Find definitions for: proc'essing tax" Pronunciation: [key] a tax levied by the government at an intermediate stage in the production of goods. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. processible procession Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language