porphyropsin
/ˌpɔːfɪˈrɒpsɪn/Biochemistry
noun
Any of a class of light-sensitive pigments found in the retinas of freshwater vertebrates, analogous to rhodopsin in humans but differing from it in containing the aldehyde of vitamin A 2 rather than that of A1 and in having a maximum absorption of visible light at a slightly longer wavelength.
Origin
1930s. From porphyro- + -opsin. Compare later opsin.
- banker's book
- banker's card
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- banker's order
- bankers' ramp
- banker's ramp
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- Bank for International Settlements
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- Bankhead, Tallulah
- bank-high
- bank holiday
- bank-holidayish
- bank holiday weekend
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- Ban Ki-moon
- banking
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- banking engine