Definition of allochromatic

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

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First Known Use of allochromatic

1849, in the meaning defined at sense 1

History and Etymology for allochromatic

all- + chromatic

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The first known use of allochromatic was in 1849

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irregularly rounded

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