Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Comprehensive
Dictionary Suite
Help
Help
Help
 
Advanced Dictionary    
Display options
Show syllables
Show Lookup History
Double-Click Lookup
  Show Spanish support
  Show Word Combinations
 
Pronunciation
Wordsmyth
  Phonics
  IPA
 
Entry formats
Standard
  Classic
 
Lookup History
photoreceptor

pho·to·re·cep·tor

photoreceptor

 
 
pronunciation:
fo to rih sep tr
features:
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.
derivations: photoreceptive (adj.), photoreception (n.)