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actuator

[ ak-choo-ey-ter ]
/ ˈæk tʃuˌeɪ tər /
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noun

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

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Origin of actuator

First recorded in 1860–65; actuate + -or2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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