opsin
[ op-sin ]
nounBiochemistry.
any of several compounds that form the protein component of the light-sensitive retina pigment, rhodopsin.
Origin of opsin
1First recorded in 1950–55; probably back formation from rhodopsin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
British Dictionary definitions for opsin
opsin
/ (ˈɒpsɪn) /
noun
the protein that together with retinene makes up the purple visual pigment rhodopsin
Origin of opsin
1C20: back formation from rhodopsin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Browse