pleochroism pleochroic • pleochroitic · · · Info · Definitions · Characters · · pleochroism · · Text Latin · · Script 11 · · Length Definitions · · · (noun) the phenomenon of different colors appearing when certain crystals are viewed from different directions. · · Noun Definition 1 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073