Definition of photopigment in English:


Syllabification: pho·to·pig·ment
Pronunciation: /ˌfōtōˈpigmənt


  • A pigment whose chemical state depends on its degree of illumination, such as those in the retina of the eye.
    More example sentences
    • The difference absorption spectroscopy in both living plasmodium and cell homogenate shows that there is a photopigment which converts reversibly between red and far-red types.
    • There is no physiological evidence for a third photopigment sensitive to blue wavelengths.
    • It could involve retinal photoreceptors, extraretinal photoreceptors in the pineal or elsewhere, photopigments such as cryptochromes within the retina or brain, or it might be mediated through a non-visual pathway.

More definitions of photopigment

Definition of photopigment in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day kerf
Pronunciation: kəːf
a slit made by cutting with a saw