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

Derived Forms

• ˌself-ˈaction, noun

Other Words From

• self-action 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.”

From Los Angeles Times

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

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

From Project Gutenberg

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.

From Project Gutenberg

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.

From Project Gutenberg