col·or·i·met·ric \|kələrə|me.trik\adjective orcol·or·i·met·ri·cal\-.trə̇kəl\ : of or relating to colorimetry < a colorimetric procedure > also: determined or to be determined by the use of a colorimeter < colorimetric analysis > • col·or·i·met·ri·cal·ly\-.trə̇k(ə)lē, -li\adverb