Definitions

1. verb

to set or cause to move or operate something, typically using a mechanical or electrical system

“The button was designed to actuate the alarm system.”

2. verb

to influence or prompt someone to do something

“Her words were meant to actuate her friend into action.”

3. noun

a mechanical device that transmits motion to another part, such as a lever or a cam

“The actuator was crucial for the proper functioning of the machine.”

4. noun

a person or thing that motivates or prompts someone to do something

“The leader was an actuator for change in the community.”