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pri•mum mo•bi•le

Pronunciation: (prē'moom mō'bi-le"; Eng. prī'mum mob'u-lē", prē'-), [key] Latin.
1. (in Ptolemaic astronomy) the outermost of the 10 concentric spheres of the universe, making a complete revolution every 24 hours and causing all the others to do likewise.
2. See prime mover.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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