pho·​to·​re·​cep·​tor | \ ˌfō-tō-ri-ˈsep-tər How to pronounce photoreceptor (audio) \

Definition of photoreceptor

: a receptor for light stimuli

Examples of photoreceptor in a Sentence

Recent Examples on the Web Interfering in photoreceptor signaling, the circadian clock and chloroplast-derived light signals did cause problems in some genes’ expression, but there was a large proportion of genes still unaffected. Mike Wehner, BGR, 8 June 2021 When light enters the eye, it is captured by photoreceptor cells., 24 May 2021 Retinitis pigmentosa causes the photoreceptor cells to break down, resulting in vision loss. Amy Dockser Marcus, WSJ, 24 May 2021 The retina’s photoreceptor cells use light-sensitive proteins, called opsins, to convert light entering the eye into electrical signals. Simon Makin, Scientific American, 23 Apr. 2021 When light enters the eye, it is captured by photoreceptor cells, which convert the information into electrical impulses and transmit them to deeper layers of the retina. Mo Costandi, Scientific American, 5 May 2014 But other experts argued that people used their experience to infer what a scene was supposed to look like—no photoreceptors involved. Nicole Wetsman, Popular Science, 24 Apr. 2020 Because the treatment is narrowly targeted to cells that perceive light, known as photoreceptors, any unintended gene edits should not cause widespread problems, Albright says. Karen Weintraub, Scientific American, 13 Aug. 2019 The starfish relatives can recognize patterns using photoreceptors on their arms—and their color-changing abilities could have something to do with it. Christopher Intagliata reports. Christopher Intagliata, Scientific American, 9 Jan. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'photoreceptor.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of photoreceptor

1906, in the meaning defined above

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Time Traveler for photoreceptor

Time Traveler

The first known use of photoreceptor was in 1906

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Statistics for photoreceptor

Last Updated

14 Jun 2021

Cite this Entry

“Photoreceptor.” Dictionary, Merriam-Webster, Accessed 17 Jun. 2021.

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More Definitions for photoreceptor


pho·​to·​re·​cep·​tor | \ -ˈsep-tər How to pronounce photoreceptor (audio) \

Medical Definition of photoreceptor

: a receptor for light stimuli

More from Merriam-Webster on photoreceptor Encyclopedia article about photoreceptor


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