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propulsion

noun

  1. act of propelling
  2. means of creating force leading to movement
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Wiktionary

Pronunciation: /pɹəˈpʌlʃən/

noun

Etymology: Borrowed from Medieval Latin propulsio, propulsionis, from the past participle of Latin propello (“to drive forward, drive forth, drive away, drive out”).

  1. The process of propelling, driving, or pushing, typically forward or onward; a propulsive force or impulse.
  2. That which propels.

    However, nuclear propulsion provides a very high specific impulse and consistent, long duration energy source.

    This propulsion provides an initial velocity for the vehicle in a short time span.