Prime-mover Definition

noun
The original force in a series of transmissions of force.
Webster's New World
One regarded as the initial source of energy directed toward a goal.
Patriotism was the prime mover of the revolution.
American Heritage
The initial force, such as electricity, wind, or gravity, that engages or moves a machine.
American Heritage
Any initiating or principal force.
Webster's New World
Any natural force applied by people to produce power, as muscular energy or flowing water.
Webster's New World
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Other Word Forms of Prime-mover

Noun

Singular:
prime-mover
Plural:
prime-movers

Origin of Prime-mover

  • Originally in translation of Latin primum mobile.

    From Wiktionary

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prime-mover