photo receptor

pho·to·re·cep·tor

[foh-toh-ri-sep-ter]
noun Physiology, Biology.
a receptor stimulated by light.

Origin:
1905–10; photo- + receptor

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
photoreceptor (ˌfəʊtəʊrɪˈsɛptə) [Click for IPA pronunciation guide]
 
n
zoology, physiol a light-sensitive cell or organ that conveys impulses through the sensory neuron connected to it

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Photo receptor is always a great word to know.
So is zedonk. Does it mean:
the offspring of a zebra and a donkey.
a scrap or morsel of food left at a meal.
American Heritage
Medical Dictionary

photoreceptor pho·to·re·cep·tor (fō'tō-rĭ-sěp'tər)
n.
A nerve ending, cell, or group of cells specialized to sense or receive light.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
photoreceptor   (fō'tō-rĭ-sěp'tər)  Pronunciation Key 
  1. 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.

  2. An electronic device that converts light energy into electrical signals. Photoreceptors are used in photocopy and facsimile machines, cameras, and solar cells.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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