photopigment 1
noundomain: substance
Princeton WordNet [ver.3.1]
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EnglishDefinition
a special pigment found in the rods and cones of the retina
Hypernym
pigment 1
noun
dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.)
EnglishHyponym
iodopsin 1
noun
a violet photopigment in the retinal cones of the eyes of most vertebrates; plays a role in daylight vision
visual purple 1
noun
a red photopigment in the retinal rods of vertebrates; dissociates into retinene by light
