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achromaticity

[ak-roh-muh-tis-i-tee, ey-kroh-] /ˌæk roʊ məˈtɪs ɪ ti, ˌeɪ kroʊ-/
noun, Optics.
Origin of achromaticity
1835-1845
1835-45; achromatic + -ity
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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