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/ɹɒˈkuːn/ · noun
(aviation, astronautics) A rocket, powered by solid fuel, that is not lit while on the ground but first carried into the upper atmosphere by a gas-filled balloon, then separated from the balloon and automatically ignited to allow it to achieve a higher altitude..
Use rockoon when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Rockoon means (aviation, astronautics) A rocket, powered by solid fuel, that is not lit while on the ground but first carried into the upper atmosphere by a gas-filled balloon, then separated from the balloon and automatically ignited to allow it to achieve a higher altitude..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use rockoon where its definition matches the intended context.
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