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| 立入禁止区域 (たちいり・きんし・くいき) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
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| 飛行禁止空域 Aviation Dictionary (Ron Schei) | |||
| English thesaurus | |||
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| P (MichaelBurov) | |||
| PH | |||
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| An airspace of defined dimensions, above the land areas or territorial waters of a State, within which the flight of aircraft is prohibited | |||
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| PA (Alex Lilo) | |||