1. A short-lived, glowing ball sometimes observed to float in the air; thought to consist of ionized gas associated with thunderstorms

Encyclopedia: Ball lightning

• pneumonoconiosis
• pneumonoultramicroscopicsilicovolcanoconiosis
• pneumothorax
• Pneumovax
• PNG
• Pnom Penh
• Po
• PO Box
• PO Box No
• PO box number
• Po Hai
• Po River
• po-faced
• Poa
• Poa nemoralis
• Poa pratensis
• Poaceae
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• poached egg
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• POB
• Pobeda Peak
• Pobedy Peak