self-acting Meaning, Definition & Usage

  1. adjective satellite designed to activate or move or regulate itself
    self-regulating; self-moving; self-activating.
    • a self-activating sprinkler system

WordNet

Self`-act"ing adjective
Definitions
  1. 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.

Webster 1913