Pa

pa or PA may stand for:

• pa, a word for dad or father ("pa" or "paw")
• Pa, Maori word meaning a fortified village or redoubt, described at length in Maori Wars
• Panama (ISO country code)
• pascal (Pa), SI unit of pressure
• Pennsylvania, the US state
• protactinium (Pa), symbol for the chemical element
• Public Address system amplification equipment

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