The Collaborative International Dictionary of English v.0.48:
Self-moving \Self`-mov"ing\, a. Moving by inherent power, without the aid of external impulse. [1913 Webster]WordNet (r) 3.0 (2006):
self-moving adj 1: designed to activate or move or regulate itself; "a self- activating sprinkler system" [syn: self-acting, self- activating, self-moving, self-regulating]