2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Retinal \Ret"i*nal\, a. (Anat.)
Of or pertaining to the retina.
{Retinal purple} (Physiol. Chem.), the visual purple.
From WordNet r 1.6 [wn]:
retinal
adj : in or relating to the retina of the eye; "retinal cells"
n : either of two yellow to red retinal pigments formed from
Rhodopsin by the action of light [syn: {retinene}]
more about retinal
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