actuator

1. Something that actuates something else.

   The mind is the actuator of the body.

   Aktor, Aktuator

2. A usually electric device that causes a mechanical device (i.e., a mechanism) to be switched on or off. For example; an electric motor that opens and closes a valve.

   Aktor, Aktuator

3. The mechanism that moves the head assembly on a disk drive.

4. A relay that controls the flow of electricity.

1. That little computer over there is the actuator of everything else in this room.

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