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''actuator'' ▫ᴱᴺ Entries

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''actuator'' ▫ᴱᴺ｜Definition｜1st｜20260218114101-00-⌔

actuator - Wiktionary, the free dictionary

English

Noun

actuator (plural actuators)

  • Something that actuates something else.
    • ✤ The mind is the actuator of the body.
    • ✤ […] and God is the Author and Actuator of nature, as well as of grace; […]1
  • 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.
  • (computer hardware) The mechanism that moves the head assembly on a disk drive.
  • (electricity) A relay that controls the flow of electricity.

Etymology

From actuate + -or. First attested in 1652.

Pronunciation

  • (UK) IPA: /ˈæk.tjuː.eɪ.tə(ɹ)/, /ˈæk.t͡ʃu.eɪ.tə(ɹ)/
  • (General American, Canada) IPA: /ˈæk.t͡ʃu.eɪ.tɚ/, [ˈæk.t͡ʃu.eɪ.ɾɚ]
  • (Australian) IPA: /ˈæk.t͡ʃʉ.æɪ.tə(ɹ)/, [ˈæk.t͡ʃʉ.æɪ.ɾə(ɹ)]

Printed 2026-06-28.

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Footnotes

  1. 1652, Anthony Burgesse, Spiritual Refining: or a Treatise of Grace and Assurance, Section V, Sermon XLIII, page 264: ↩

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