[ trahyt-n-oh-pee-uh ]
/ ˌtraɪt nˈoʊ pi ə /

noun Ophthalmology.

a defect of vision in which the retina fails to respond to blue and yellow.

Origin of tritanopia

< New Latin, equivalent to trit- (< Greek trítos third) + an- an-1 + -opia -opia


trit·an·op·ic [trahyt-n-op-ik] /ˌtraɪt nˌɒp ɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for tritanopia

/ (ˌtraɪtəˈnəʊpɪə, ˌtrɪt-) /


a form of colour blindness in which there is a tendency to confuse blues and greens and in which sensitivity to blue is reduced

Derived forms of tritanopia

tritanopic (ˌtraɪtəˈnɒpɪk, ˌtrɪt-), adjective

Word Origin for tritanopia

C19/20: from New Latin, from Greek tritos third + New Latin anopia blindness; signifying that only two thirds of the spectrum can be distinguished
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

Medicine definitions for tritanopia

[ trī′tə-nōpē-ə ]


A deficiency in color preception characterized by an inability to discern blue and yellow due to an absence of blue-sensitive pigment in the retina.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.