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Definition of Opsin
1. Noun. Retinal protein formed by the action of light on rhodopsin.
Definition of Opsin
1. Noun. (biochemistry) Any of a group of light-sensitive proteins in the retina ¹
¹ Source: wiktionary.com
Definition of Opsin
1. a type of protein [n -S] - See also: protein
Medical Definition of Opsin
1.