title: PAA
text: # PAA
  
  PAA may refer to:
  
  ## Businesses and organizations
  
  * Pacific American Airlines
  * Pamoja African Alliance, a Kenyan political party
  * PanAfrican Archaeological Association
  * Pan African Association
  * Pan American World Airways, commonly known as Pan Am
  * Pan American Association of Anatomy
  * Pittsburgh Athletic Association, athletic and social club
  * Polish American Association
  * Population Association of America, dedicated to population and demography studies
  * Portland Adventist Academy, an Adventist High School
  
  ## Science, technology and mathematics
  
  ### Chemistry and materials science
  
  * Peroxyacetic acid, a chemical
  * Phenylacetic acid, a chemical
  * Phosphoamino acid analysis, a biochemistry technique
  * Polyacrylamide, an acrylate polymer
  * Polyacrylic acid, an acrylic polymer
  * Primary Aromatic Amine, a group of compounds
  
  ### Electronic devices
  
  * Personal Attack Alarm
  * Piezo Audio Amplifier
  
  ### Linguistics
  
  * Proto-Afroasiatic language
  * Proto-Austroasiatic language
  
  ### Statistics
  
  * Piecewise Aggregate Approximation [zh], dimension reduction method
  
  ## Legislation
  
  * Perpetuities and Accumulations Act 1964, UK act of Parliament
  * Perpetuities and Accumulations Act 2009, UK act of Parliament
  * Protect America Act of 2007, amendment to the US Foreign Intelligence Surveillance Act
  
  ## Other uses
  
  * Penny Arcade Adventures, video game series
  * Prueba de Aptitud Académica, standardized test for university admissions
  