In the Ptolemaic system, the outermost of the revolving concentric spheres constituting the universe, the motion of which was supposed to carry with it all the inclosed spheres with their planets in a daily revolution from east to west
primum mobile
Heceleme
primum mo·bile
Telaffuz
Etimoloji
() Post-classical Latin (from Latin prīmum neuter of prīmus ‘first’ + mōbile, from mobilis ‘mobile’), translating Arabic.