porphyropsin

noun
por·​phy·​rop·​sin | \ˌpȯr-fə-ˈräp-sən \

Definition of porphyropsin 

: a purple pigment in the retinal rods of freshwater fishes that resembles rhodopsin

First Known Use of porphyropsin

1930, in the meaning defined above

History and Etymology for porphyropsin

Greek porphyra purple + English -opsin (as in rhodopsin)

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The first known use of porphyropsin was in 1930

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More Definitions for porphyropsin

porphyropsin

noun
por·​phy·​rop·​sin | \ˌpȯr-fə-ˈräp-sən \

Medical Definition of porphyropsin 

: a purple pigment in the retinal rods of freshwater fishes that resembles rhodopsin

More from Merriam-Webster on porphyropsin

Britannica.com: Encyclopedia article about porphyropsin

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