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Noun: pilot balloon  'pI-lut bu'loon
  1. Meteorological balloon used to observe air currents

Derived forms: pilot balloons

Type of: meteorological balloon

Encyclopedia: Pilot balloon

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pillwort
pilocarpine
pilomotor reflex
pilose
pilosebaceous
Pilosella
Pilosella aurantiaca
Pilosella officinarum
pilosity
pilot
pilot balloon
pilot biscuit
pilot bit
pilot blacksnake
pilot boat
pilot bread
pilot burner
pilot chart
pilot cloth
pilot engine
pilot experiment