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Meteorological balloon
/mˌiːtɪˌɔːɹəlˈɒdʒɪkəl bəlˈuːn/
/mˌiːɾɪˌoːɹəlˈɑːdʒɪkəl bəlˈuːn/
Meteorological balloon
01
a small unmanned balloon set aloft to observe atmospheric conditions
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a small unmanned balloon set aloft to observe atmospheric conditions