primum mobile

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English[edit]

Etymology[edit]

Post-classical Latin (from Latin prīmum neuter of prīmus ‘first’ + mōbile, from mobilis ‘mobile’), translating Arabic.

Pronunciation[edit]

  • IPA(key): /ˌpɹaɪməm ˈməʊbɪli/

Noun[edit]

primum mobile (uncountable)

  1. (historical) The outermost sphere of the heavens in Ptolemaic astronomy.
  2. (theology, philosophy) The prime mover or first cause.