actuator
noun
ac·tu·a·tor
ˈak-chə-ˌwā-tər 
-shə-
: one that actuates
specifically
: a mechanical device for moving or controlling something
Examples of actuator in a Sentence
Recent Examples on the Web
Early versions used pulleys and linear actuators, but these were replaced with servos for better precision and easier control.
—
Sujita Sinha, Interesting Engineering, 8 May 2026
These in turn create pressure requests directed at the front calipers, where electrohydraulic actuators with pistons push on them to apply braking pressure to the wheels.
—Abhimanyu Ghoshal, New Atlas, 6 May 2026
Each one’s fin actuators run on samarium-cobalt magnets.
—Steve H. Hanke, Fortune, 30 Apr. 2026
Joint actuators are the single largest component cost in a humanoid robot.
—Jon Markman, Forbes.com, 27 Apr. 2026
See All Example Sentences for actuator
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Sujita Sinha, Interesting Engineering, 8 May 2026
These in turn create pressure requests directed at the front calipers, where electrohydraulic actuators with pistons push on them to apply braking pressure to the wheels.
—Abhimanyu Ghoshal, New Atlas, 6 May 2026
Each one’s fin actuators run on samarium-cobalt magnets.
—Steve H. Hanke, Fortune, 30 Apr. 2026
Joint actuators are the single largest component cost in a humanoid robot.
—Jon Markman, Forbes.com, 27 Apr. 2026
See All Example Sentences for actuator
Cite this Entry
“Actuator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/actuator. Accessed 15 May. 2026.
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