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protanopia

[proht-n-oh-pee-uh]

noun

Ophthalmology.

  1. a defect of vision in which the retina fails to respond to red or green.

protanopia

/ ˌprəʊtəˈnəʊpɪə, ˌprəʊtəˈnɒpɪk /

noun

  1. a form of colour blindness characterized by a tendency to confuse reds and greens and by a loss of sensitivity to red light

“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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Other Word Forms

  • protanopic adjective
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Word History and Origins

Origin of protanopia1

From New Latin, dating back to 1900–05; prot-, an- 1, -opia
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Word History and Origins

Origin of protanopia1

C20: New Latin, from proto- + an- + -opia

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