Entry 1 sense Webster, 1913 Blanchimeter /(blȧnch*ĭm"ē̇*tẽr)/ · Blanch·im·e·ter · IPA 01 n. An instrument for measuring the bleaching power of chloride of lime and potash; a chlorometer. 1. An instrument for measuring the bleaching power of chloride of lime and potash; a chlorometer.