/ Dictionary / Index P piecewise: Meaning and Definition of Find definitions for: piece•wise Pronunciation: (pēs'wīz"), [key] — adv. Math. denoting that a function has a specified property, as smoothness or continuity, on each of a finite number of pieces into which its domain is divided: a piecewise continuous function; a piecewise differentiable curve. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. piece rate piecework Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language