noun Biochemistry.

a photosensitive violet pigment that occurs in the cones of the retina and is transformed by light into retinal and an opsin protein.

Compare rhodopsin.

Origin of iodopsin

1935–40; < Greek īṓd(ēs) taken as derivative of íon violet (see iodine) + opsin, on the pattern of rhodopsin Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for iodopsin



a violet light-sensitive pigment in the cones of the retina of the eye that is responsible for colour visionAlso called: visual violet See also 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

iodopsin in Medicine




A violet, light-sensitive visual pigment found in the cones of the retina.visual violet
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.