allochromatic
adjective
al·lo·chro·mat·ic
1
: accidentally rather than inherently pigmented : variable in color —used of certain minerals that are without pigmentation when pure
2
: having or relating to photoelectric properties due to the presence of an impurity or as a result of irradiation
Word History
Etymology
all- + chromatic
First Known Use
1849, in the meaning defined at sense 1