prime mover
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Tweet n. 1. a. One regarded as the initial source of energy directed toward a goal: Patriotism was the prime mover of the revolution. b. The initial force, such as electricity, wind, or gravity, that engages or moves a machine. c. A machine or mechanism that converts natural energy into work. Also called primum mobile. 2. Any of various heavy-duty trucks or tractors. 3. Philosophy In Aristotelian philosophy, an eternal, immaterial being of pure motion that cannot be changed but is the cause of change and motion. |
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