An Etymological Dictionary of Astronomy and Astrophysics

Having a self-acting or self-regulating mechanism.

Etymology (EN): From Gk. automatos “self-acting,” from → auto- + matos “willing,” from PIE *men- “to think;” compare with Av./O.Pers. man- “to think.”

Etymology (PE): Xodkâr from xod-, → auto-, + kâr “acting, actor,” from kardan “to do, act.”