noun

actuator

actuator

The robot arm uses a hydraulic actuator.

The robot arm uses a hydraulic actuator.

An electric actuator controls the valve.

An electric actuator controls the valve.

a/an ((type)) actuator a (type of) actuator The system uses a pneumatic actuator.

Synonyms: motor, driver, mechanism

From 'actuate' (to put into action) + '-or' (agent noun suffix).

An actuatOR is something that causes an ACTion. It's the part of a machine that moves something.

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