/ Dictionary / Index P processor: Meaning and Definition of Find definitions for: proc•es•sor Pronunciation: (pros'es-ur or, esp. Brit., prō'ses-), [key] — n. a person or thing that processes. computer. controller (def. 5). See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: processor (Thesaurus) processive process printing 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