iodopsin(redirected from photopsin)
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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
i•o•dop•sin(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.
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|Noun||1.||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
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