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View synonyms for pilot balloon

pilot balloon

noun

  1. a balloon for the visual observation of upper-atmosphere wind currents.

pilot balloon

noun

  1. a meteorological balloon used to observe air currents
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of pilot balloon1

First recorded in 1840–50

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pilotagepilot bird

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