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electrometer

noun

elec·​trom·​e·​ter i-ˌlek-ˈträ-mə-tər How to pronounce electrometer (audio)
: any of various instruments for detecting or measuring potential differences or ionizing radiations by means of the forces of attraction or repulsion between charged bodies

Example Sentences

Recent Examples on the Web Using an instrument called an electrometer, built by Pierre and his brother, Marie measured the mysterious rays emitted by thorium and uranium. Adam Hadhazy, Discover Magazine, 10 Oct. 2019

Word History

First Known Use

1749, in the meaning defined above

Time Traveler
The first known use of electrometer was in 1749

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