Found 2 items, similar to self-acting.
English → English (WordNet) Definition: self-acting self-acting adj : designed to activate or move or regulate itself; “a self-activating sprinkler system” [syn: self-activating, self-moving, self-regulating]
English → English (gcide) Definition: Self-acting Self-acting \Self`-act"ing\, 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. [1913 Webster]