visual purple

noun

Definition of visual purple

: a photosensitive red or purple pigment in the retinal rods of various vertebrates especially : rhodopsin

First Known Use of visual purple

1878, in the meaning defined above

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The first known use of visual purple was in 1878

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More Definitions for visual purple

visual purple

noun

Medical Definition of visual purple

More from Merriam-Webster on visual purple

Britannica.com: Encyclopedia article about visual purple

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