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

Conventional actuators needed to control such complex movements typically add rigid components, making the robot stiffer. — Reuters, NBC news, 6 Nov. 2026

Motors, actuators, computing hardware and power electronics generate heat while performing demanding tasks. — Jijo Malayil, Interesting Engineering, 5 Nov. 2026

Of Neo1's 41 joints, 39 are driven by small hydraulic actuators, the parts that make a joint move. — New Atlas, 1 Nov. 2026

Prior to the refurbishment, the doors were controlled by hydraulic actuators. — Todd Martens, Los Angeles Times, 23 Oct. 2026

Word History

Etymology

actuate + -or entry 1

First Known Use

1652, in the meaning defined above

Rhymes for actuator

• creator
• curator
• debater
• deflator
• dictator
• dilator
• equator
• locator
• piscator
• pronator
• relator
• rotator