actuator
Americannoun
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a person or thing that actuates.
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a servomechanism that supplies and transmits a measured amount of energy for the operation of another mechanism or system.
Etymology
Origin of actuator
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“Many key humanoid components are also found within the EV ecosystem, such as motors, actuator power electronics, magnets and advanced motion-control bearings,” wrote Sheppard.
From Barron's ● Jun. 1, 2026
"The actuator is composed of a motor controller and reduction gears. It is very similar to an electric power steering system," says Se Uk Oh, vice president leading the robotics business division at Hyundai Mobis.
From BBC ● Feb. 5, 2026
"It's been investigated for many years," says Read, acknowledging that elastomers have yet to revolutionise actuator tech.
From BBC ● Feb. 5, 2026
When the material becomes saturated, the actuator would briefly activate using power from a solar cell, shake out the water, and then reset for another cycle.
From Science Daily ● Nov. 20, 2025
He tried to scramble from his place between motor and turbine fuel lines without success; he was trapped like a wild animal by the heavy actuator which had swung past his head.
From Tight Squeeze by Dean Charles Ing
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
