actuator

noun

ac·​tu·​a·​tor ˈak-chə-ˌwā-tər How to pronounce actuator (audio)
-shə-
: one that actuates
specifically : a mechanical device for moving or controlling something

Examples of actuator in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Sensors, actuators, and flight computers must converse flawlessly. Kaif Shaikh, Interesting Engineering, 20 Aug. 2025 The new actuator is made of a flexible silicone polymer called polydimethylsiloxane, a neodymium magnet, and an electrical coil intertwined with soft magnetic iron spheres. IEEE Spectrum, 12 Aug. 2025 Some use an actuator to push the handle away from the car and pull it back in. New Atlas, 2 Aug. 2025 The lens uses Sigma's fastest high-speed linear actuator (HLA) motor tech to drive its autofocus. PC Magazine, 17 July 2025 See All Example Sentences for actuator

Word History

Etymology

actuate + -or entry 1

First Known Use

1652, in the meaning defined above

Time Traveler
The first known use of actuator was in 1652

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Cite this Entry

“Actuator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/actuator. Accessed 10 Sep. 2025.

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