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self-acting

American  
[self-ak-ting] / ˈsɛlfˈæk tɪŋ /

adjective

  1. acting by itself; automatic.


self-acting British  

adjective

  1. not requiring an external influence or control to function; automatic

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of self-acting

First recorded in 1670–80

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Its new rule said bump stocks were illegal machine guns because they function as “a self-acting or self-regulating mechanism that allows the firing of multiple rounds through a single function of the trigger.”

From Los Angeles Times Feb. 28, 2024

It said the bump stock device functions as “a self-acting or self-regulating mechanism that allows the firing of multiple rounds through a single pull of the trigger.”

From Los Angeles Times Nov. 3, 2023

He proposed self-acting and continuous systems of brake, and considered a good system of brake of so great importance, that he advocated their compulsory introduction by State legislation.

From A History of the Growth of the Steam-Engine by Thurston, Robert H.

The drill spindle is provided with variable rates of self-acting feed, but may also be moved rapidly by hand, and is counterbalanced.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua

The outflow passes into another vessel known as a flush-tank, where it accumulates until it reaches the summit of a self-acting siphon.

From A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases by Various

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