起き動どう力りょく

noun

motive power; impetus

Technical term for the force or power that sets something in motion; used in physics, engineering, and figurative contexts.

• この機き械かいの起き動どう力りょくは電でん動どうモーターによって供きょう給きゅうされる。

  The motive power of this machine is supplied by an electric motor.

• 彼かれの演えん説ぜつが改かい革かくの起き動どう力りょくとなった。

  His speech became the impetus for reform.