pho·​to·​di·​ode ˌfō-tō-ˈdī-ˌōd How to pronounce photodiode (audio)
: a photoelectric semiconductor device for detecting and often measuring radiant energy (such as light)

Examples of photodiode in a Sentence

Recent Examples on the Web Moreover, advances in lidar for autonomous vehicles have led to more efficient photodiodes for converting light to electricity. IEEE Spectrum, 2 Oct. 2023 To break it down even further, infrared LEDs and photodiodes sensors team up to figure out your heart rate by shining light into your skin and measuring how much bounces back. Talene Appleton, Men's Health, 10 June 2023 Underneath the skin of each finger is a flexible reflective membrane, and under that membrane is an array of LEDs along with an array of photodiodes. IEEE Spectrum, 4 May 2023 That photodiode was then connected to an analog-to-digital converter and a standard PC, which translated the sensor’s voltage output to data that represents the real-time fluctuations of the light reflecting from whatever object the telescope points at. Andy Greenberg, Wired, 22 Feb. 2022 Eventually meters equipped with photodiodes and optical sensors were devised to read the strips more precisely. Boris Kovatchev, IEEE Spectrum, 21 Nov. 2021 The Ben Gurion team found that using a photodiode was more effective and efficient than a camera, allowing easier long-range listening with a new range of objects and offering real-time results. Andy Greenberg, Wired, 22 Feb. 2022 The Front Deep Trench Isolation (FDTI) allows each photodiode to absorb and hold more light information. Chris Smith, BGR, 2 Sep. 2021 Light sensors use a device known as a photodiode to turn light into an electrical current. Nicole McFarlane, The Conversation, 7 Dec. 2020 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'photodiode.' 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

1945, in the meaning defined above

Time Traveler
The first known use of photodiode was in 1945

Dictionary Entries Near photodiode

Cite this Entry

“Photodiode.” Dictionary, Merriam-Webster, Accessed 8 Dec. 2023.

Medical Definition


pho·​to·​di·​ode -ˈdī-ˌōd How to pronounce photodiode (audio)
: a photoelectric semiconductor device for detecting and often measuring radiant energy (such as light)

More from Merriam-Webster on photodiode

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