PCA

PCA may refer to:

Medicine and biology

Patient-controlled analgesia
Plate count agar in microbiology
Polymerase cycling assembly, for large DNA oligonucleotides
Posterior cerebral artery
Posterior cortical atrophy, a form of dementia
Prostate cancer
Protein-fragment complementation assay, to identify protein–protein interactions
Protocatechuic acid, a phenolic acid.
Personal Care Assistant, also known as unlicensed assistive personnel
Procainamide

Military and government

EU-Armenia Partnership and Cooperation Agreement (PCA agreement between Armenia and the EU)
Parks Canada Agency
Partnership and Cooperation Agreement (EU)
Permanent change of assignment in US armed forces

Organizations

Political parties

Parti Communiste Algérien (Algerian Communist Party)
Partido Comunista de Andalucía (Communist Party of Andalusia)
Partido Comunista de Aragón (Communist Party of Aragon)
Partido Comunista de la Argentina (Communist Party of Argentina)

Religion

Sports

Peace Curling Association, the regional governing body for the sport of curling in the Peace River region of Northern Alberta prior to 2018
Positive Coaching Alliance, US, provides sports training workshops
Professional Cricketers' Association, England and Wales
Punjab Cricket Association
Punjab Cricket Association Stadium, Mohali, India

Other

Permanent Court of Arbitration, The Hague, Netherlands
Several Police complaints authorities
Porsche Club of America
POSC Caesar Association, a standardization organization
Production Code Administration, a division of the Motion Picture Association of America
Progressive Citizens of America
Progressive Cultural Association, a British political music group

Science and technology

para-Chloroamphetamine or 4-Chloroamphetamine
Principal component analysis, a statistical procedure
Printed circuit assembly or printed circuit board
Probabilistic cellular automaton (Math/Stochastic Processes)
Protocatechuic acid, a polyphenol antioxidant
Pyroglutamic acid, an amino acid derivative

Computers

Physical configuration audit, in configuration management
Polymorphous Computer Architectures, a DARPA project; see Josep Torrellas

Other uses

People's Choice Awards, awards show where winners are voted on by the general public
Personal carbon allowance, for carbon dioxide emissions
Pete Crow-Armstrong, American baseball player
Prompt Corrective Action, US banking law

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PCA