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

Its internal mechanical architecture is modeled on the human spine and musculoskeletal system, using synthetic muscle-like actuators that enable fluid, natural movements. — Jijo Malayil, Interesting Engineering, 16 July 2026

This is caused by linkages when digital systems (software, network connections, and AI models) interface directly with physical machinery (actuators, robotic limbs, vehicles, and factory valves). — Anjana Susarla, Forbes.com, 9 July 2026

LiberNovo provides a five-year warranty on all Omni’s non-electronic parts, and covers the battery, cables, and actuator for two years. — Will Greenwald, PC Magazine, 9 July 2026

Technicians seated along an assembly line were fastening artificial tendons to the fingers to link them with actuators in the wrist. — Stephen Witt, New Yorker, 29 June 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