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photocell

noun

pho·​to·​cell ˈfō-tə-ˌsel How to pronounce photocell (audio)

Example Sentences

Recent Examples on the Web In short: The missile would adjust course midflight to keep the target’s heat signature reflected onto a sensitive photocell, making the missile literally seek heat. Alex Hollings, Popular Mechanics, 21 Mar. 2021 Then a buddy at work, a master electrician, devised a photocell to power the lights and reduce battery hassle. Zaz Hollander, Anchorage Daily News, 28 Nov. 2019 The new light fixtures have a dusk-to-dawn photocell and 100-watt LED light bulbs. Benny L. Kass, chicagotribune.com, 14 Feb. 2018 To reverse engineer the wave, Adafruit measured the brightness of a Mac LED using an oscilloscope, a photocell, some extra circuitry and — of course — duct tape. Charlie Sorrel, WIRED, 16 June 2011

Word History

Etymology

International Scientific Vocabulary

First Known Use

1891, in the meaning defined above

Time Traveler
The first known use of photocell was in 1891

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