adj, noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   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. countable, uncountable
2. 2
   either of two yellow to red retinal pigments formed from rhodopsin by the action of light wordnet

Adjective

1. 1
   Of or pertaining to the retina. not-comparable, relational

Adjective

1. 1
   in or relating to the retina of the eye wordnet

Synonyms

All synonyms

retineneretinaldehyderetinene

Example

More examples

"I had retinal detachment five years ago."

Etymology

Etymology 1

From retina + -al (“of or pertaining to”).

Etymology 2

From retina + -al (“aldehyde”).

Related phrases

central retinal arteryintrinsically photosensitive retinal ganglion cellmelanopsin-containing retinal ganglion cellphotosensitive retinal ganglion cellretinal artretinal purple

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.