photoreceptor(redirected from Photoreceptor (disambiguation))
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1. A nerve ending, cell, or group of cells specialized to sense or receive light.
2. An electronic device that converts light energy into electrical signals.
(Zoology) zoology physiol a light-sensitive cell or organ that conveys impulses through the sensory neuron connected to it
pho•to•re•cep•tor(ˌfoʊ toʊ rɪˈsɛp tər)
a membrane protein or end organ that is stimulated by light.
A specialized structure or cell that is sensitive to light. In vertebrate animals, the photoreceptors are the rods and cones of the eye's retina. See Note at circadian rhythm.