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achromat

[ak-ruh-mat] /ˈæk rəˌmæt/
noun
Origin
1905-1910
1905-10; by shortening
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for achromat

achromat

/ˈækrəˌmæt/
noun
1.
Also called achromatic lens. a lens designed to bring light of two chosen wavelengths to the same focal point, thus reducing chromatic aberration Compare apochromat
2.
a person who has no colour vision at all and can distinguish only black, white, and grey. The condition is very rare
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Value for achromat

15
16
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