protanopia Hear it!

protanopia definition

pro·tano·pia (prō′tə nō′pē ə)

noun

a defect of color vision characterized by the inability to see red

Etymology: ModL: see proto-, an-, & -opia

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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