opsin

[ op-sin ]
/ ˈɒp sɪn /

noun Biochemistry.

any of several compounds that form the protein component of the light-sensitive retina pigment, rhodopsin.

Origin of opsin

First recorded in 1950–55; probably back formation from rhodopsin

Words nearby opsin

opruss, opry, ops, ops., opsimath, opsin, opsinogen, opsiuria, opsoclonus, opsogen, opsomania

British Dictionary definitions for opsin

opsin
/ (ˈɒpsɪn) /

noun

the protein that together with retinene makes up the purple visual pigment rhodopsin

Word Origin for opsin

C20: back formation from rhodopsin

Medical definitions for opsin

opsin
[ ŏp′sĭn ]

n.

A protein of the retina, especially the protein constituent of rhodopsin, that makes up one of the visual pigments.