propulsion
noun/prəˈpʌlʃn/
/prəˈpʌlʃn/
[uncountable] (specialist)- the force that drives something forward
- wind/steam/jet propulsion
- The fish uses its tail fins for propulsion through the water.
Oxford Collocations DictionaryPropulsion is used before these nouns:- system
Word Originearly 17th cent. (in the sense ‘expulsion’): from medieval Latin propulsio(n-), from Latin propellere ‘drive before (oneself)’.
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propulsion