Definition of photoreceptor in English:

Share this entry


Pronunciation: /ˈfəʊtəʊrɪˌsɛptə/


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.



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.

For editors and proofreaders

Line breaks: photo|recep¦tor

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.