The abbreviation PCA stands for:

  • Personal communication order
  • Private hospital or private hospital / private hospital, see hospital
  • Commercial pharmaceutical employee (formerly also: chemist assistant )
  • Pilot conditioning plant
  • Police Commissioner contender, a rank in the police, law enforcement officials see # careers
  • Partnership and Cooperation Agreement between the EU and Eastern European countries
  • Encryption Public Key Algorithm
  • Napaskiak (Alaska) Airport to the IATA airport code
  • Project class analysis, a theoretical circles in the 1970s
  • A protein kinase, an enzyme

PCA as distinguishing signs on license plate:

  • Poland: powiat Kaliski in the Greater Poland Voivodeship

PKa stands for:

  • A measure of the strength of an acid, see acidity constant
  • Disambiguation
  • Abbreviation