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photoreceptor Syllabification: pho·to·re·cep·tor
Pronunciation: /ˌfōdōrəˈseptər/

Definition of photoreceptor in English:


A structure in a living organism, especially a sensory cell or sense organ, that responds to light falling on it.
Example sentences
  • Indeed, most organisms have evolved specialized photoreceptors for circadian light perception.
  • Both Z and phototropin have been implicated as blue light photoreceptors of guard cells.
  • All visual systems begin with photoreceptors, which are cells that respond to light energy.


Pronunciation: /ˈseptiv/
Example sentences
  • The second mutant phenotype is a slower rate of photoreceptive disk membrane renewal in the outer segments, caused by perturbed phagocytosis of disk membranes.
  • Higher plants have evolved a complex photoreceptive system involving distinct families of photoreceptors to perceive light signals.
  • Visual pigments are photoreceptive molecules that occur in rod and cone photoreceptor cells in the retina and characterize the vision of an animal.
Definition of photoreceptor in:
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