porphyropsin Hear it!

porphyropsin definition

por·phy·rop·sin (pôr′fə räp′sin)

noun

a photosensitive, carotenoid protein pigment found in the rods of the retinas of freshwater vertebrates

Etymology: < Gr porphyra, purple + opsis, appearance (< ōps, eye) + -in

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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