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photoreceptor

pho·to·re·cep·tor

photoreceptor

 
 
pronunciation:
fo to rih sep tr
features:
Word Combinations (noun), Word Parts
part of speech: noun
definition: a cell on a sense organ or nerve, such as the eye or the optic nerve, that detects light, or the organ or nerve itself.
The human retina has over 100 million photoreceptors.
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derivations: photoreceptive (adj.), photoreception (n.)
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