opsin

[ op-sin ]

noun

, Biochemistry.

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

opsin

/ ˈɒpsɪn /

noun

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

Word History and Origins

Origin of opsin¹

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

Word History and Origins

Origin of opsin¹

C20: back formation from rhodopsin