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.
Unlike software-only AI, physical AI combines algorithms with sensors and actuators in robots, vehicles and devices, enabling them to perceive their surroundings and make real-time decisions. Janakiram Msv, Forbes, 3 Mar. 2025 The artificial furcula that was added to the robot consists of a striking arm that is held under the rear end of the body by a parallel linkage made up of tensioned shape-memory alloy actuators. Ben Coxworth, New Atlas, 28 Feb. 2025 An onboard electronic control system delivers up to 500 volts to each of those actuators at a power of just 500 milliwatts. Ben Coxworth, New Atlas, 23 Feb. 2025 Other companies' robots typically use other types of actuators, such as solenoids and electric motors. Ars Technica, 21 Feb. 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 12 Mar. 2025.

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