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Search Result for "achromatism": 
Wordnet 3.0

NOUN (1)

1. the visual property of being without chromatic color;
[syn: colorlessness, colourlessness, achromatism, achromaticity]


The Collaborative International Dictionary of English v.0.48:

Achromatism \A*chro"ma*tism\, n. [Cf. F. achromatisme.] The state or quality of being achromatic; as, the achromatism of a lens; achromaticity. --Nichol. [1913 Webster]
WordNet (r) 3.0 (2006):

achromatism n 1: the visual property of being without chromatic color [syn: colorlessness, colourlessness, achromatism, achromaticity] [ant: color, coloring, colour, colouring]