piecewise adverb 2adjective 2 adverb2 •In terms or by means of pieces; a piece at a time.One could even do the recount piecewise, starting with the most questionable regions. — 2006 •Throughout separate parts, but not necessarily throughout the whole.automatic reconstruction of accurate, concise, piecewise smooth surface models from scattered range data — 1994 adjective2 •Defined by subfunctions and subdomainsOur formula is not defined as a piecewise function, but rather as a single closed-form expression — 2018 •Clipping of piecewise linear.In piecewise regression we replace the concept — 1970