visual purple
English Thesaurus
1. a red photopigment in the retinal rods of vertebrates; dissociates into retinene by light (noun.substance)
hypernym | : | photopigment, |
definition | : | a special pigment found in the rods and cones of the retina (noun.substance) |
part meronym | : | retinal rod, rod, rod cell, |
definition | : | a visual receptor cell that is sensitive to dim light (noun.body) |
substance holonym | : | opsin, |
definition | : | retinal protein formed by the action of light on rhodopsin (noun.substance) |
substance holonym | : | retinal, retinene, |
definition | : | either of two yellow to red retinal pigments formed from rhodopsin by the action of light (noun.substance) |
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