actuator

[ ak-choo-ey-ter ]

noun

1. a person or thing that actuates.
2. a servomechanism that supplies and transmits a measured amount of energy for the operation of another mechanism or system.

Word History and Origins

Origin of actuator¹

First recorded in 1860–65; actuate + -or ²

Example Sentences

Next is an actuator, basically something that changes the property of the material.

From Singularity Hub 

Because of this complexity, it can take up to a year of extensive trial and error to define the system’s functional requirements, design the actuator mechanics, develop the necessary software, and validate the overall system.

From MIT Technology Review

The problem, he adds, is that carefully examining “the dozens of different actuators that can influence the final results of fuel consumption and pollutant emissions” is a lengthy and complex process, made by more difficult by rigid timelines.

From MIT Technology Review

Up next for Project Kiwi is a new set of actuators that can dynamically apply torque plus added sensing capabilities for more stability and reaction to uneven ground or interactions.

From TechCrunch

This means fewer components and the ability to keep motor and actuator packages small and compact enough to fit underneath theming.

From TechCrunch

Obviously, the actuator had smashed his transmitter, but left the receiver section intact.

From Project Gutenberg

The tape moved on unperturbedly, reminding him to inspect the actuator bearings and extension rods.

From Project Gutenberg

When I put enough voltage across its terminals, the actuator clicked down through the core.

From Project Gutenberg

The "internal controller," the actuator of all spirits, according to the text: Who abiding in the soul, rules the soul within.

From Project Gutenberg

The valves are mounted side by side, as shown at E, so the double actuator member may be operated by a single set of cams.

From Project Gutenberg