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Definition of propulsion noun from the Oxford Advanced Learner's Dictionary

 

propulsion

 noun
noun
BrE BrE//prəˈpʌlʃn//
 
; NAmE NAmE//prəˈpʌlʃn//
 
[uncountable] (specialist)
 
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the force that drives something forward wind/steam/jet propulsion The fish uses its tail fins for propulsion through the water. see also propel Word Origin early 17th cent. (in the sense ‘expulsion’): from medieval Latin propulsio(n-), from Latin propellere ‘drive before (oneself)’.
See the Oxford Advanced American Dictionary entry: propulsion

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