| NOUN | phenomenon | reaction propulsion | propulsion that results from the ejection at high velocity of a mass of gas to which the vehicle reacts with an equal and opposite momentum |
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| Meaning | propulsion that results from the ejection at high velocity of a mass of gas to which the vehicle reacts with an equal and opposite momentum. | |
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| Narrower | jet propulsion | propulsion by means of the discharge of a jet of fluid toward the rear |
| rocket propulsion | reaction propulsion using stored oxygen for combustion | |
| Broader | propulsion | A propelling force |
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