- 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for actuator
He struggled with his vulcanized suit, trying to squeeze from under the actuator.
Obviously, the actuator had smashed his transmitter, but left the receiver section intact.
The tape moved on unperturbedly, reminding him to inspect the actuator bearings and extension rods.
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
When I put enough voltage across its terminals, the actuator clicked down through the core.The Trouble with Telstar