1. Designating an airship having a shape maintained only by internal gas pressure and without a supporting structure

Antonym: rigid

• family Pteridaceae
• family Pteriidae
• family Pteroclididae
• family Pterodactylidae
• family Ptilonorhynchidae
• family Pucciniaceae
• family Pulicidae
• family Punicaceae
• family Pygopodidae
• family Pyralidae
• family Pyralididae
• family Pyrolaceae
• family Pyrrhocoridae
• family Pythiaceae
• family Pythonidae
• family Rachycentridae
• family Rafflesiaceae
• family Rajidae
• family Rallidae
• overturn
• overturned
• overuse
• overutilisation
• overutilization
• overvaliant