actuator

ac·tu·a·tor  (kch-tr)

n.

One that activates, especially a device responsible for actuating a mechanical device, such as one connected to a computer by a sensor link.

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A mechanism that furnishes the force required to displace a control surface or other control element.

Thesaurus

Noun

1.

actuator - a mechanism that puts something into automatic action mechanism - device consisting of a piece of machinery; has moving parts that perform some function positioner, rotary actuator - (computer science) the actuator that moves a read/write head to the proper data track