pho·​to·​tran·​sis·​tor | \ ˌfō-tō-tran-ˈzi-stər How to pronounce phototransistor (audio) , -tran(t)-ˈsi- \

Definition of phototransistor

: a photoconductive semiconductor device used especially as a photodetector

Examples of phototransistor in a Sentence

Recent Examples on the Web The capsule has tiny phototransistors that send the light information to a microprocessor, which broadcasts it wirelessly to a computer or smartphone. Sean Rossman, USA TODAY, "Researchers are working on an electronic pill you can take to see if you're sick or not," 25 May 2018 Not much, but enough for a custom phototransistor to capture it and relay that information to a microprocessor—which sent the signal to an Android app developed by an undergraduate engineering student. Megan Molteni, WIRED, "This Digital Pill Prototype Uses Bacteria to Sense Stomach Bleeding," 24 May 2018

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

First Known Use of phototransistor

1950, in the meaning defined above

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Cite this Entry

“Phototransistor.” Dictionary, Merriam-Webster, Accessed 28 Sep. 2020.

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