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Adjective: retinal  re-t(i-)nul
  1. In or relating to the retina of the eye
    "retinal cells"
Noun: retinal  re-t(i-)nul
  1. Either of two yellow to red retinal pigments formed from rhodopsin by the action of light
    "retinal is crucial for the visual cycle in the retina";
    - retinene

Derived forms: retinals

Type of: pigment

Part of: retinal purple, rhodopsin, visual purple

Encyclopedia: Retinal