primum mobile
/'praimʌm'mɔbili:/
📖 中文释义
- 原动天, 第十层天(2世纪希腊天文学家托勒密(Ptolemy)的天动说中的最外层天体, 带动所有天体转动)
📘 English Definition（英文释义）
- 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. See Crystalline
- heavens, under Crystalline.