Definition of visual purple in English:

visual purple

Line breaks: vis¦ual pur¦ple

noun

[mass noun]
  • A purplish-red light-sensitive pigment present in the retinas of humans and many other animal groups.
    More example sentences
    • In 1877, Boll and Kuhne independently published their classical studies on visual purple, the photoreceptor pigment of rods, and established that it was involved in the detection of light.
    • The photoreceptor of rod cells is specifically called rhodopsin or visual purple.
    • It is the reddish purple color of retinal that gives rhodopsin its former name visual purple.

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