Pa

Pa, PA or pa may stand for:

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• pa, a word for dad or father ("pa" or "paw")
• pa, Chinese political title meaning hegemon
• Pa, Maori word meaning a fortified village or redoubt, described at length in Maori Wars
• Per annum, p.a.
• Palestinian Authority
• Panama (ISO country code, PA)
• Panjabi language (ISO 639 alpha-2, pa)
• pascal (Pa), SI unit of pressure
• Passenger Announcement (PA), not to be confused with Public Address System described below.
• Peano arithmetic
• Pennsylvania, the US state
• Penny Arcade, the popular gaming webcomic
• Personal Assistant (PA)
• physician assistant, the medical profession
• Press Association,(PA) the UK news agency
• Production assistant,(PA)
• protactinium (Pa), symbol for the chemical element
• Port Angeles a city in Washington, USA
• Polyamide (PA), a kind of plastic
• Polyacetylene (PA)
• Power amplifier
• Public Address System system amplification equipment
• Phillips Academy, a private secondary school
• PA is the IATA alpha code designator for Pan American World Airways (Pan Am)
• PA is also the short form for the PA-RISC family processor architecture from Hewlett-Packard