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protanopia

 - 4 dictionary results

pro⋅ta⋅no⋅pi⋅a

  [proht-n-oh-pee-uh]
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–noun Ophthalmology.
a defect of vision in which the retina fails to respond to red or green.
Origin:
1900–05; < NL; see prot-, an- 1 , -opia

Related forms:
pro⋅ta⋅nop⋅ic  [proht-n-op-ik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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pro·ta·no·pi·a   (prō'tə-nō'pē-ə)   
n.  A form of colorblindness characterized by defective perception of red and confusion of red with green or bluish green.

[prot(o)- + an- + -opia (from the blindness to red, which is considered the first of the primary colors).]
pro'ta·nop'ic (-nŏp'ĭk) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: prot·an·opia
Pronunciation: "prOt-&-'nO-pE-&
Function: noun
: a dichromatism in which the spectrum is seen in tones ofyellow and blue with confusion of red and green and reduced sensitivity to monochromatic lights from the red end of the spectrum
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

protanopia pro·ta·no·pi·a (prō'tə-nō'pē-ə)
n.
A form of colorblindness characterized by defective perception of red and confusion of red with green or bluish green.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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