photopigment

/ˈfoʊdoʊˌpɪgmənt/
IPA guide

Definitions of photopigment
  1. noun
    a special pigment found in the rods and cones of the retina
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    types:
    iodopsin
    a violet photopigment in the retinal cones of the eyes of most vertebrates; plays a role in daylight vision
    retinal purple, rhodopsin, visual purple
    a red photopigment in the retinal rods of vertebrates; dissociates into retinene by light
    type of:
    pigment
    dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.)
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