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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

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Word History and Origins

Origin of pilot balloon1

First recorded in 1840–50

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Example Sentences

Still another device employed by meteorologists is the pilot-balloon.

His white cravat was tied before in a sort of pilot-balloon, or white rosicrucian puff.

The pilot balloon, that is so soon out of sight, can offer no guidance—don't forget that!

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