/ Dictionary / Index P parity check: Meaning and Definition of Find definitions for: par'ity check" Pronunciation: [key] — Computers. Computers. a method for detecting errors in data communications or within a computer system by counting the number of ones or zeros per byte or per word, including a special check bitto see if the value is even or odd. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. parity parity operation Related Content Daily Word Quiz: banshee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language