Opsin Definition

ŏpsĭn
noun
Any of several colorless proteins, found in the rods and cones of the retina, that combine with various forms of retinal to produce light-sensitive pigments such as rhodopsin.
Webster's New World
Any of various light-sensitive proteins, especially one that is a constituent of a rhodopsin or other visual pigment found in the retina of the vertebrate eye.
American Heritage
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Other Word Forms of Opsin

Noun

Singular:
opsin
Plural:
opsins

Origin of Opsin

  • Probably back-formation from rhodopsin

    From American Heritage Dictionary of the English Language, 5th Edition

  • Probably back-formation from rhodopsin

    From American Heritage Dictionary of the English Language, 5th Edition

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