/ Dictionary / Index P probit: Meaning and Definition of Find definitions for: prob•it Pronunciation: (prob'it), [key] — n. Statistics. a normal equivalent deviate increased by five. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. probie probity Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language