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Related to iodopsin: photopsin


Any of a class of light-sensitive pigments found in the retinal cones of the vertebrate eye.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biochemistry) a violet light-sensitive pigment in the cones of the retina of the eye that is responsible for colour vision. Also called: visual violet See also rhodopsin
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌaɪ əˈdɒp sɪn)

a photosensitive violet pigment in the cones of the retina.
[1935–40; < Greek īṓd(ēs) violet-colored (derivative of íon violet) + (rhod)opsin]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.iodopsin - a violet photopigment in the retinal cones of the eyes of most vertebrates; plays a role in daylight vision
cone cell, retinal cone, cone - a visual receptor cell in the retina that is sensitive to bright light and to color
opsin - retinal protein formed by the action of light on rhodopsin
photopigment - a special pigment found in the rods and cones of the retina
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Takahashi, "Circadian regulation of iodopsin gene expression in embryonic photoreceptors in retinal cell culture," Neuron, vol.