Propulsion
/prəˈpʌlʃən/
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Definition
(noun) The process of propelling, driving, or pushing, typically forward or onward; a propulsive force or impulse.
Sentence Examples
To overcome drag, airplanes use a propulsion system to generate a force called thrust.
This is the first time solar propulsion has been successfully demonstrated in Earth's orbit.
CEFR Practice Quiz
The spacecraft relied on ion ____ to maintain its trajectory through the outer solar system.