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actuator

[ak-choo-ey-ter] /ˈæk tʃuˌeɪ tər/
noun
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.
Origin
1860-1865
1860-65; actuate + -or2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for actuator
  • The transmission maps actuator movements to the desired wing motions.
  • As might be expected, the discussion about dual actuator failures grew complicated.
  • Immersion believes this can be greatly improved by switching to a piezoelectric actuator.
  • An actuator is a mechanical device for moving or controlling a mechanism or system.

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