photosensitive

adjective

pho·​to·​sen·​si·​tive ˌfō-tō-ˈsen(t)-s(ə-)tiv How to pronounce photosensitive (audio)
1
: sensitive to the action of radiant energy
photosensitive paper
2
: being or caused by an abnormal reaction to sunlight
photosensitive rashes

Examples of photosensitive in a Sentence

paper with a photosensitive coating
Recent Examples on the Web But the researcher also modified the polymer at the gate by integrating photosensitive molecules, which means the gate can also be controlled by light. IEEE Spectrum, 10 Nov. 2023 Li-Fi uses special light fixtures that have small control units and solid-state light emitters and photosensitive receivers. IEEE Spectrum, 10 Dec. 2023 Similar to a Foveon chip, the three photosensitive layers of the sensor divide the spectrum of visible light into three bands with peak sensitivities at blue, green, and red. IEEE Spectrum, 24 Nov. 2023 Pros: Alcohol-free, affordable, can help with body acne and blemishes Cons: Some reviewers experienced redness after using this product, may make skin more photosensitive Size: 8 oz. Dana Leigh Smith, Glamour, 13 Oct. 2023 Cell lasers also hold promise as a way of deliver laser for therapies, for example, to activate a photosensitive drug at the target to kill microbes or cancerous cells. Matjaž Humar and Seok-Hyun Yun, Discover Magazine, 27 July 2015 As the disease advanced, people displayed a symmetrical photosensitive rash across their limbs, neck and face. Kristin Baird Rattini, Discover Magazine, 18 July 2018 Normally the rods and cones are photosensitive, but given that RP had essentially damaged and destroyed the patient's rods and cones, the ganglion cells (that mainly focus on carrying electrical charges generated by those photoreceptive cells) would have to be modified. William A. Haseltine, Forbes, 8 June 2021 For example, photosensitive organoids like the one mentioned above might dimly sense a flash of light, then a return to darkness, even if the event raises no thoughts or feelings. Cody Cottier, Discover Magazine, 28 Feb. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'photosensitive.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1886, in the meaning defined at sense 1

Time Traveler
The first known use of photosensitive was in 1886

Dictionary Entries Near photosensitive

Cite this Entry

“Photosensitive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/photosensitive. Accessed 19 Apr. 2024.

Medical Definition

photosensitive

adjective
pho·​to·​sen·​si·​tive ˌfōt-ō-ˈsen(t)-sət-iv, -ˈsen(t)-stiv How to pronounce photosensitive (audio)
1
: sensitive or sensitized to the action of radiant energy
photosensitive paper
2
: being or caused by an abnormal reaction to sunlight
photosensitive rashes
photosensitivity noun
plural photosensitivities

More from Merriam-Webster on photosensitive

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