Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of self-acting is as below...

Self-acting :: Self-acting (a.) Acting of or by one's self or by itself; -- said especially of a machine or mechanism which is made to perform of or for itself what is usually done by human agency; automatic; as, a self-acting feed apparatus; a self-acting mule; a self-acting press..

Thermostat :: Thermostat (n.) A self-acting apparatus for regulating temperature by the unequal expansion of different metals, liquids, or gases by heat, as in opening or closing the damper of a stove, or the like, as the heat becomes greater or less than is desired..

Automatical :: Automatical (a.) Pertaining to, or produced by, an automaton; of the nature of an automaton; self-acting or self-regulating under fixed conditions; -- esp. applied to machinery or devices in which certain things formerly or usually done by hand are done by the machine or device itself; as, the automatic feed of a lathe; automatic gas lighting; an automatic engine or switch; an automatic mouse..

Float :: Float (v. i.) The hollow, metallic ball of a self-acting faucet, which floats upon the water in a cistern or boiler..

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