propulsion

Meanings

1. 1
   noun

   the action or process of driving something forward

   The squid moves by propulsion, forcing water through a narrow opening.

2. 2
   noun

   a force, system, or means that makes a vehicle or object move

   The spacecraft uses electric propulsion for long journeys.

Borrowed in the seventeenth century from Medieval Latin propulsio, 'a driving out or urging on,' formed from Latin propellere, 'to push or thrust forward.'

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