Meaning of actuator

ac•tu•a•tor

Pronunciation: (ak'ch-ā"tur), [key]
— n.
  1. a person or thing that actuates.
  2. a servomechanism that supplies and transmits a measured amount of energy for the operation of another mechanism or system.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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