PA
Encyclopedia : P : PA : PA : PA
Pa may stand for:
- Pennsylvania, postal code of the U.S. state.
- Pa, a word for dad or father ("pa" or "paw").
- Pa (Chinese), political title meaning hegemon.
- Pa (Māori), word meaning a fortified village or redoubt, described at length in Māori Wars.
- Pascal, SI unit of pressure.
- Petayear, an unit of time.
- Protactinium (Pa), symbol for the chemical element.
- Pa Department, Burkina Faso
- Florida Coastal Airlines, IATA airline designator.
- Purple Angelica
- PA-RISC family processor architecture from Hewlett-Packard.
- Palestinian Authority.
- Palo Alto, California.
- Pan American World Airways (Pan Am), IATA airline designator.
- Panama (ISO country code).
- Passenger announcement, not to be confused with Public Address System, below.
- Peano Arithmetic.
- Penny Arcade (comic), a popular gaming webcomic.
- People's Association, in Singapore.
- Performing artist.
- Personal assistant.
- Petampere or Peta-ampere, an SI unit of electric current (worth 1015 A).
- Phillips Academy, a private secondary school.
- Physician Assistant, the medical profession.
- Polyacetylene.
- Polyamide, a kind of plastic.
- Port Angeles a city in Washington, United States.
- Power amplifier.
- Press Association, an UK news agency.
- Prince Albert piercing
- Production Assistant.
- Public Address System, amplification equipment.
- Public administration
- Public affairs
- Public audio
- a series of paper sizes with 3:4 aspect ratio (most notably PA4)
- the Peano Axioms
- Per annum (also "p.a.").
- Panjabi language (ISO 639 alpha-2 language code).
- Picoampere, an SI unit of electric current (worth 10−12 A).
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