retinal

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

either of two yellow to red retinal pigments formed from rhodopsin by the action of light
• Syn:
retinene
• Hypernyms:
pigment
• Substance Holonyms:
visual purple, rhodopsin, retinal purple

II - adjective

in or relating to the retina of the eye (Freq. 3)
- retinal cells
• Pertains to noun:
retina
• Derivationally related forms:
retina