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pibal

[pahy-buh l] /ˈpaɪ bəl/
noun, Meteorology
1.
the measurement and computation of the speed and direction of winds by theodolitic tracking of a pilot balloon.
Compare rabal.
Origin of pibal
pi(lot) bal(loon)
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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