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
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Such robots need high-speed machine vision, fast motors and actuators, precise control, and the ability to make accurate predictions in real time, not to mention being able to develop a game strategy. ArsTechnica, 31 May 2025 The air pressure sequentially triggers two ligament actuators in each leg, which move the limb laterally, along with one foot actuator that lifts the limb off the ground. Ben Coxworth may 28, New Atlas, 28 May 2025 Sigma uses its fastest high-response linear actuator (HLA) autofocus motor in the 300-600mm F4, which makes sense given the typical use cases: fast-moving action in team or individual sports and unpredictable wildlife. PC Magazine, 19 May 2025 Once again, the concept art for Cosmo—the huge head, the huge boots—proved difficult, as did the necessity of packing the battery, computer, sensors, actuators and other components into a relatively small body. Jennifer Ouellette, Ars Technica, 15 Mar. 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 4 Jun. 2025.

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