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One that activates, especially a device responsible for actuating a mechanical device, such as one connected to a computer by a sensor link.
ac•tu•a•tor(ˈæk tʃuˌeɪ tər)
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.
A mechanism that furnishes the force required to displace a control surface or other control element.
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|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