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.
Utilizing advanced digital steer-by-wire technology, this rectangular yoke replaces a mechanical steering column completely with precise electronic actuators. — New Atlas, 15 Oct. 2026 Unlike conventional bicycles, its head houses most of the robot’s mass, including its computing hardware, batteries, and powerful jumping actuators. — Jijo Malayil, Interesting Engineering, 14 Oct. 2026 The system works passively, with no pumps, actuators, or other moving parts to maintain. — Michael Lydick, PC Magazine, 14 Oct. 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
See all Nearby Words

Cite this Entry

“Actuator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/actuator. Accessed 20 Oct. 2026.

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