Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. One regarded as the initial source of energy directed toward a goal: Patriotism was the prime mover of the revolution.
  • n. The initial force, such as electricity, wind, or gravity, that engages or moves a machine.
  • n. A machine or mechanism that converts natural energy into work. Also called primum mobile.
  • n. Any of various heavy-duty trucks or tractors.
  • n. Philosophy In Aristotelian philosophy, the self-moved being that causes all motion.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The initial agent that is the cause of all things.
  • n. A machine, such as a water wheel or steam engine, that receives and modifies energy as supplied by some natural source or fuel and transforms it into mechanical work
  • n. The front part of a semi-trailer type truck, i.e., the tractor to which the trailer part attaches.
  • n. A military or heavy construction vehicle.

from the GNU version of the Collaborative International Dictionary of English

  • adj. The original or the most effective force in any undertaking or work.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. an agent that is the cause of all things but does not itself have a cause

Etymologies

Originally in translation of Latin primum mobile. (Wiktionary)

Examples

Sorry, no example sentences found.

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