self-acting

[self-ak-ting]

adjective

1. acting by itself; automatic.

self-acting

adjective

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

Other Word Forms

• self-action noun

Word History and Origins

Origin of self-acting¹

First recorded in 1670–80

Example Sentences

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.”

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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.”

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He invented a self-acting machine, worked by a stream of water-drops, for accumulating electric charges, on the principle of the revolving doubler.

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Children and young persons may not be allowed to work between the fixed and traversing parts of a self-acting machine while the machine is in motion.

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The self-acting lathe, or engine lathe, implying that there is a slide rest actuated automatically to traverse the tool to its cut or feed.

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