1. A small unmanned balloon set aloft to observe atmospheric conditions

Derived forms: meteorological balloons

Type of: balloon

Encyclopedia: Meteorological balloon

• nonagon
• nonalcoholic
• nonaligned
• nonalignment
• nonalinement
• nonallele
• nonappearance
• nonappointive
• nonarbitrable
• nonarbitrary
• nonarboreal
• nonassertive
• nonassociative
• nonastringent
• nonattendance
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• nonautonomous
• nonbearing
• nonbeing
• nonbeliever
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• nonbiodegradable pollution
• noncallable bond
• noncaloric
• noncandidate