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
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.
RoboParty is integrating the RP1 robot body, actuator modules, low-level control, and embodied AI algorithms into a single development system. — Jijo Malayil, Interesting Engineering, 5 Oct. 2026 The third is a network of syringe-injectable implants, each packing two receiving pads, a transistor switch, a battery, and either a sensor or an actuator such as a nerve stimulator. — Jacek Krywko, ArsTechnica, 30 Sep. 2026 In the rat, sensors worn on the front paws reported to a wearable hub, and the actuator was a stimulator hooked up to the sciatic nerve in the hind leg. — Peter Hall, Scientific American, 29 Sep. 2026 Vehicle architecture covers compute, sensors, actuators, networks and energy systems. — Rajjie Sarmey, Forbes.com, 25 Sep. 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

Rhymes for actuator

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Browse Nearby Words

actuation
actuator
act up
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Cite this Entry

“Actuator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/actuator. Accessed 14 Oct. 2026.

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