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.
The researchers fabricated the actuators using a 2D molding process that can manufacture them at millimeter, centimeter, and decimeter scales. IEEE Spectrum, 12 Aug. 2025 The lens uses Sigma's fastest high-speed linear actuator (HLA) motor tech to drive its autofocus. PC Magazine, 17 July 2025 Maxon's advanced actuators give AEON its agile, human-like movement, enabling it to tackle a wide range of tasks across various environments. Kurt Knutsson, FOXNews.com, 5 July 2025 Some use an actuator to push the handle away from the car and pull it back in. New Atlas, 2 Aug. 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 3 Sep. 2025.

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