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pho·to·re·cep·tor
 photoreceptor
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- pronunciation:
- fo
to
rih
sep
t
 r
- 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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