actuator
UK: ˈæktʃueɪtə | US: ˈæktʃueɪtər
n. a device or mechanism that causes a machine or system to operate, typically by converting energy into motion.
The word "actuator" derives from the Latin root act- (meaning "to do" or "drive"), combined with the suffix -uat- (a verb-forming element from Latin -uare), and the agentive suffix -or (indicating "one who does"). The term evolved in engineering to describe a device that "drives" or "activates" mechanical systems, reflecting its Latin roots in action and motion.
The robotic arm's actuator allows precise movement in manufacturing.
A faulty actuator caused the car's throttle to malfunction.
Engineers replaced the hydraulic actuator to restore the system's function.
The actuator responds to electrical signals to control valve positions.
Modern drones use lightweight actuators for agile flight adjustments.