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| pri·mum mo·bi·le [ prməm mṓbə l, prməm mṓbə lày ] (plural pri·mum mo·bi·les) |
noun |
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| Definition: |
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1. outermost sphere of universe: in Ptolemaic astronomy, the outermost sphere of the universe, thought to revolve every 24 hours, moving the inner spheres with it
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2. philosophy
Same as prime mover (sense 2)
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| [15th century. < medieval Latin, "first moving thing"] |
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