English Edit

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Etymology Edit

Shortened form of rhodopsin. From Ancient Greek ὄψις (ópsis, sight) +‎ -in.

Noun Edit

opsin (plural opsins)

  1. (biochemistry) Any of a group of light-sensitive proteins in the retina.
    • 2015 May 20, Mo Costandi, The Guardian[1]:
      Ramirez and Oakley therefore predicted that opsins are present in octopus skin, where they might act as light sensors.

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