PCA

PCA or PCa may refer to:

Medicine and biology

Patient-controlled analgesia, any method of allowing a person in pain to administer his own pain relief
Personal Care Assistant/Attendant or Patient Care Assistant, a caregiver who assists a person with day-to-day tasks
Plate count agar (microbiology), a microbiological growth medium
Polymerase cycling assembly, a method for the assembly of large DNA oligonucleotides from shorter fragments
Posterior cerebral artery (neuroscience), a blood vessel to the posterior aspect of the brain (occipital lobe)
Posterior cortical atrophy, the visual variant of Alzheimer’s disease
Posterior cricoarytenoid muscle, laryngeal muscle involved with opening the vocal chord
Prostate cancer antigen
Protein-fragment Complementation Assay, a method for the identification of protein–protein interactions in biological systems

Partnership and Cooperation Agreement (EU)
Permanent Change of Assignment, describes the reassignment of active duty military personnel to a new unit within the same post
Personal Capability Assessment, see Employment and Support Allowance (UK)

Packaging Corporation of America, a containerboard and corrugated packaging products company in the United States
Peanut Corporation of America, a peanut processor forced out of business after being found to be the source of a massive salmonella outbreak in the United States
Pennsylvania Central Airlines, an airline brand operating in the United States from 1936 until 1948

Pacific Coast Academy, the fictional school setting of the Nickelodeon television series Zoey 101
Parents and Citizens Associations, organizations that support public schools in Australia
Paris College of Art, an American private university in Paris, France
Pasig Christian Academy, a school located in Caniogan, Pasig City, Philippines
Pensacola Christian Academy, a private Christian school in Pensacola, Florida
Peoples Christian Academy, a private Christian school in Toronto, Ontario, Canada
Pittsburgh Classical Academy Middle School, a middle school with an academic program that focuses on classical history
Plano Christian Academy, an Evangelical, non-denominational, private, Classical Christian school supporting grades K-12
Prestonwood Christian Academy, a private Christian Pre K-12 school in Plano, Texas
Providence Christian Academy (disambiguation), for multiple schools

PokerStars Caribbean Adventure, European Poker Tour event
Professional Chess Association, from 1993 to 1996, a rival organisation to FIDE, the international chess organization

Presbyterian Church in America, a Protestant Christian denomination, the second largest Presbyterian body in the United States after the Presbyterian Church (U.S.A.)
Presbyterian Church of Australia, the largest Presbyterian denomination in Australia

Positive Coaching Alliance, provides training workshops to schools and youth sports organizations (USA)
Professional Cricketers' Association, representative body of past and present first class cricketers in England and Wales
Punjab Cricket Association
Punjab Cricket Association Stadium, Mohali, India

Permanent Court of Arbitration, based in The Hague, the oldest international institution for dispute resolution
Police Complaints Authority (disambiguation)
Porsche Club of America, an organization of Porsche enthusiasts in the United States and Canada
POSC Caesar Association, a standardization organization, custodian of ISO 15926
Predator Conservation Alliance (USA), founded in 1991, a conservation group based in Bozeman, Montana
Production Code Administration, a division of the Motion Picture Association of America

para-Chloroamphetamine or 4-Chloroamphetamine
Principal component analysis, a statistical procedure
Printed circuit assembly or Printed circuit board
Probabilistic cellular automaton (Math/Stochastic Processes)
Propulsion Controlled Aircraft, a computer-assisted propulsion control system that enables the safe landing of an aircraft when its normal control surfaces such as elevators, rudders, and ailerons are disabled.
Protocatechuic acid, a polyphenol antioxidant
Pyroglutamic acid, an amino acid derivative

People's Choice Awards, an American awards show recognizing popular culture, held annually and voted on by the general public
Personal carbon allowance, a ration of allowed carbon emissions for individuals, designed to help address human-caused global warming
Prompt Corrective Action, a law which requires penalties for banks which don't meet their capital requirements

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