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.
What actually happens is that the trailer roof rises straight up via electro-pneumatic actuators at the push of a button. New Atlas, 9 Oct. 2024 Controllers responsible for taking action range from the basic actuator control systems at the lowest level to task and motion planning at the highest level. Jacek Krywko, Ars Technica, 3 Apr. 2024 The rear wing uses an actuator to continuously alter its height and angle of attack, and can adopt Low Drag or High Downforce configurations. Jason Barlow, WIRED, 17 Oct. 2024 The shifts are controlled via the ECU and a Transmission Control Unit, supported by an electromechanical shift actuator. New Atlas, 13 Oct. 2024 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

Dictionary Entries Near actuator

Cite this Entry

“Actuator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/actuator. Accessed 21 Nov. 2024.

More from Merriam-Webster on actuator

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!