01 a. Of or pertaining to the retina.
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1.
Of or pertaining to the retina.(Anat.)
Phrases & compounds
Retinal purple —
the visual purple.
Entry
2 senses · 2 variants
Webster, 1913
Retinal
02 n. A retinoid compound (C20H28O), closely related to vitamin A, which is a component of the visual pigments in the eye. It is also called ret…
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1.
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.(Chem.) Also: retinaldehyde, vitamin A aldehyde