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

Now, hardware costs have more than halved as China achieved manufacturing dominance in adjacent industries like electric vehicles, which have spurred innovations and economies of scale in components that overlap with robots, including actuators, sensors, and batteries. —Eric Schmidt, Time, 3 Mar. 2026

The robot benefits from strategic partnerships, including with Google DeepMind for advanced AI integration to enhance cognitive capabilities, as well as Nvidia and Hyundai Mobis for actuators and supply chain support. —Chris Young, Interesting Engineering, 2 Mar. 2026

Until the engine builds oil pressure, the actuator will cause a rattle. —John Paul, The Providence Journal, 20 Feb. 2026

While older torque vectoring systems use the brakes to balance power between wheels, Audi’s setup here is active, using an electric motor actuator to make huge power deltas between the left and right wheels if necessary. —Andrew P. Collins, The Drive, 19 Feb. 2026

Word History

Etymology

actuate + -or entry 1

First Known Use

1652, in the meaning defined above

Rhymes for actuator

• activator
• agitator
• alligator
• allocator
• alternator
• animator
• annotator
• applicator
• arbitrator
• aspirator
• aviator
• calculator