'Retinal' definitions:
Definition of 'retinal'
From: WordNet
adjective
In or relating to the retina of the eye; "retinal cells"
noun
Either of two yellow to red retinal pigments formed from rhodopsin by the action of light [syn: retinene, retinal]
Definition of 'Retinal'
From: GCIDE
- Retinal \Ret"i*nal\, n. (Chem.) A retinoid compound (C20H28O), closely related to vitamin A, which is a component of the visual pigments in the eye. It is also called retinaldehyde and vitamin A aldehyde. [PJC]
Definition of 'Retinal'
From: GCIDE
- Retinal \Ret"i*nal\, a. (Anat.) Of or pertaining to the retina. [1913 Webster]
- Retinal purple (Physiol. Chem.), the visual purple. [1913 Webster]