Meaning of VISUAL PURPLE

Pronunciation:			'vizhooul 'purpul
WordNet Dictionary
	Definition:		[n]  a red photopigment in the retinal rods of vertebrates; dissociates into retinene by light
	Synonyms:		retinal purple, rhodopsin
	See Also:		opsin, photopigment, retinal, retinal rod, retinene, rod, rod cell