Achromatopsy definitions

Achromatopsy

• (n.) Color blindness; inability to distinguish colors; Daltonism.
Found on http://thinkexist.com/dictionary/meaning/achromatopsy/

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Achromatopsy

A·chro'ma·top'sy noun [ Greek 'a priv. + ... color + ... sight.] Color blindness; inability to distinguish colors; Daltonism.
Found on http://www.encyclo.co.uk/webster/A/19

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