Definition of photoreceptor noun from the Oxford Advanced Learner's Dictionary

 

photoreceptor

 noun
noun
BrE BrE//ˈfəʊtəʊrɪseptə(r)//
 
; NAmE NAmE//ˈfoʊtoʊrɪseptər//
 
(biology)
 
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a cell or an organ that is sensitive to light
See the Oxford Advanced American Dictionary entry: photoreceptor