'Retinal purple' definitions:
Definition of 'retinal purple'
From: WordNet
noun
A red photopigment in the retinal rods of vertebrates; dissociates into retinene by light [syn: visual purple, rhodopsin, retinal purple]
Definition of 'Retinal purple'
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]