tritanopia

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tri·tan·o·pi·a

 (trī′tə-nō′pē-ə)
n.
A visual defect characterized by the inability to discern blue and yellow.

[Greek tritos, third; see trei- in Indo-European roots + Greek anōpiā, blindness (an-, not; see a-1 + -ōpiā, -opia), so called because blue is considered the third of the primary colors.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

tritanopia

(ˌtraɪtəˈnəʊpɪə; ˌtrɪt-)
n
(Pathology) a form of colour blindness in which there is a tendency to confuse blues and greens and in which sensitivity to blue is reduced
[C19/20: from New Latin, from Greek tritos third + New Latin anopia blindness; signifying that only two thirds of the spectrum can be distinguished]
tritanopic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

tritanopia

a defect of the eyesight in which the retina does not respond to blue and yellow. — tritanope, n. — tritanopic, adj.
See also: Eyes
a defect of the eyesight in which the retina does not respond to blue and yellow. — tritanope, n. — tritanopic, adj.
See also: Color
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.tritanopia - rare form of dichromacy characterized by a lowered sensitivity to blue light resulting in an inability to distinguish blue and yellowtritanopia - rare form of dichromacy characterized by a lowered sensitivity to blue light resulting in an inability to distinguish blue and yellow
yellow-blue color blindness, yellow-blue dichromacy - confusion of yellow and blue
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