primum mobile
'praimʌm'mɔbili:
基本解释
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)
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.
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