iodopsin

noun

io·​dop·​sin ˌī-ə-ˈdäp-sən How to pronounce iodopsin (audio)
: a photosensitive violet pigment in the retinal cones that is similar to rhodopsin but more labile, is formed from vitamin A, and is important in daylight vision

Word History

Etymology

iod- (from Greek ioeidḗs "violet-colored") + -opsin (in rhodopsin) — more at iodine

First Known Use

1938, in the meaning defined above

Time Traveler
The first known use of iodopsin was in 1938

Dictionary Entries Near iodopsin

iodophor

iodopsin

iodoso-

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Cite this Entry

“Iodopsin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/iodopsin. Accessed 25 Nov. 2024.

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Medical Definition

iodopsin

noun
io·​dop·​sin ˌī-ə-ˈdäp-sən How to pronounce iodopsin (audio)
: a photosensitive violet pigment in the retinal cones that is similar to rhodopsin but more labile, is formed from vitamin A, and is important in photopic vision

More from Merriam-Webster on iodopsin

Britannica.com: Encyclopedia article about iodopsin

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