| NOUN | substance | photopigment | a special pigment found in the rods and cones of the retina |
|---|
| Meaning | A special pigment found in the rods and cones of the retina. | |
|---|---|---|
| Narrower | iodopsin | A violet photopigment in the retinal cones of the eyes of most vertebrates |
| visual purple, rhodopsin, retinal purple | A red photopigment in the retinal rods of vertebrates | |
| Broader | pigment | dry coloring material (especially a powder to be mixed with a liquid / liquid to produce paint, etc.) |
| Spanish | fotopigmento | |
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