actuator

noun

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

Examples of actuator in a Sentence

Recent Examples on the Web
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These include a high-performance actuator joint, a human-like robotic hand, and a dedicated AI training dataset designed to help robots learn and perform more effectively in real-world environments. Jijo Malayil, Interesting Engineering, 2 June 2026 The winning enterprise systems will look less like a robot with a model on top and more like a control plane that happens to have actuators. Ashutosh Saxena, Forbes.com, 1 June 2026 The Orchestration Engine translates intent into device-specific command sequences for any connected actuator. IEEE Spectrum, 21 May 2026 The structures are also still experimental and nowhere near ready to replace traditional robotic actuators in high-power applications. New Atlas, 19 May 2026 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 12 Jun. 2026.

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