Entry 1 sense Webster, 1913 Lithotriptor /(lĭth"ō̇*trĭp`tẽr)/ · Lith·o·trip·tor · IPA 01 n. An instrument for triturating the stone in the bladder; a lithotrite. 1. An instrument for triturating the stone in the bladder; a lithotrite.(Surg.)