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achromaticity

noun ach·ro·ma·tic·i·ty \ ˌa-krə-məˈtisətē , ˌā- \
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Definition of achromaticity

plural -es
1 : the quality or state of being achromatic (as grayness of a color)
2 : degree of being achromatic

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First Known Use of achromaticity

1821

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