different between opson vs opsin

English

From Ancient Greek ???? (ópson, “that which is cooked”).

opson

In Ancient Greek cuisine, delicacies such as cooked fish, considered an integral component of a meal.

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

opsin (plural opsins)

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

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