retinal
noun
- chemical compound
adjective
- relating to the retina
Wiktionary
Pronunciation: /ˈɹɛt.ɪn.əl/ / /ˈɹɛt.ən.əl/ / /ˈɹɛt.nəl/ / /ˈɹɛt.əˌnæl/ / /ˈɹɛt.əˌnɔl/
adj
Etymology: Etymology tree English retina Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Latin -ālisbor. Old French -albor. ▲ Latin -ālis Old French -elbor. ▲ Latin -ālisbor. Middle English -al English -al English retinal From retina + -al (“of or pertaining to”).
- Of or pertaining to the retina.
noun
Etymology: From retina + -al (“aldehyde”).
- A yellow to orange aldehyde derived from vitamin A that is formed from rhodopsin by the action of light and in combination with proteins forms the visual pigments of the retinal rods and cones.