prime mover

• Человек или вещь, являющиеся основным источником силы, влияния или действия; в технике — начальный источник механической энергии, такой как двигатель или мотор.

A person or thing that is the primary source of power, influence, or action; in engineering, it refers to the initial source of mechanical power, such as an engine or motor.

1. Initial source of motionC1formal

   The original or primary source of motion or power in a system.

   Первичный источник движения

   • In physics, the engine is considered the prime mover of the vehicle.
   • The water wheel served as the prime mover for the old mill.
   • Electric motors are common prime movers in modern machinery.

2. Initiator of actionC1formal

   A person or thing that initiates or drives a process or change.

   Инициатор действий

   • She was the prime mover behind the new environmental policy.
   • The CEO acted as the prime mover of the company's expansion.
   • Innovation is often the prime mover of economic growth.