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[ak-choo-ey-ter] /ˈæk tʃuˌeɪ tər/
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.
Origin of actuator
First recorded in 1860-65; actuate + -or2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for actuator
Historical Examples
  • He struggled with his vulcanized suit, trying to squeeze from under the actuator.

    Tight Squeeze Dean Charles Ing
  • Obviously, the actuator had smashed his transmitter, but left the receiver section intact.

    Tight Squeeze Dean Charles Ing
  • The tape moved on unperturbedly, reminding him to inspect the actuator bearings and extension rods.

    Tight Squeeze Dean Charles Ing
  • The "internal controller," the actuator of all spirits, according to the text: Who abiding in the soul, rules the soul within.

    The Sarva-Darsana-Samgraha Madhava Acharya
  • When I put enough voltage across its terminals, the actuator clicked down through the core.

    The Trouble with Telstar John Berryman

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