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rockoon

Pronunciation: /ɹɒˈkuːn/

The English word “rockoon” has 1 meaning listed here.

noun

  1. 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.

Etymology

Blend of rocket + balloon.

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.