Definition of opsin in English:

opsin

Syllabification: op·sin
Pronunciation: /ˈäpsin
 
/

noun

Biochemistry
A protein that forms part of the visual pigment rhodopsin and is released by the action of light.
More example sentences
  • Rhodopsin consists of a protein called opsin bonded to a pigment called retinal.
  • Vitamin A then combines with a protein opsin to form rhodopsin.
  • Visual pigments are composed of a light-absorbing chromophore that is bound to the protein opsin.

Origin

1950s: shortening of rhodopsin.

Definition of opsin in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day inamorata
Pronunciation: ɪˌnaməˈrɑːtə
noun
a person's female lover