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

In addition, the DiSus-Z intelligent suspension system uses electromagnetic actuators to continuously adapt to road conditions, improving both ride comfort and high-speed stability, reported Cars News China. —Prabhat Ranjan Mishra, Interesting Engineering, 1 Jan. 2026

This includes components like actuators, which power a robot’s movement, as well as the AI software that is integrated into the final product. —Arjun Kharpal, CNBC, 30 Dec. 2025

There are racks of arms and shelves of legs, metal gears hanging from hooks, and trays of actuators ready to be assembled. —James Vincent, Harpers Magazine, 30 Dec. 2025

Lee said engineering tests completed over the summer certified that the rotary actuators used to steer Perseverance's wheels can operate optimally for at least another 37 miles (60 kilometers). —Sharmila Kuthunur, Space.com, 19 Dec. 2025

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