Retinal

3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Retinal \Ret"i*nal\, a. (Anat.)
     Of or pertaining to the retina.
     [1913 Webster]
  
     {Retinal purple} (Physiol. Chem.), the visual purple.
        [1913 Webster]



From The Collaborative International Dictionary of English v.0.48 [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]

From WordNet (r) 2.0 [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}]