Organizations

• Polish Telegraphic Agency
  Polish Telegraphic Agency
  Polish Telegraphic Agency was a Polish state-owned news agency established in 1918. As the only such agency in Poland at the time it was the official supplier of news on Poland both for the Polish press and foreign media . Since 1927 the PAT also issued a weekly newsreel...
  
  , the official news agency of Poland between 1918 and 1991
• Port Authority Transit, the former name of the Port Authority of Allegheny County, Pittsburgh
• Port Authority of Thailand
  Port Authority of Thailand
  The Port Authority of Thailand is a state corporation of Thailand, responsible for the regulation and governance of the ports of Thailand, primarily the ports of Laem Chabang and Bangkok, the country's two largest ports. PAT operates Thai ports in conjunction with public companies including...
  
  
• Professional Association of Teachers
  Professional Association of Teachers
  Voice 'The union for education professionals' is an independent British Trade Union for teachers, lecturers and other education and childcare workers in British education...
  
  , the former name of the trade union Voice

Science and technology

• Portable Appliance Test
• Powder-actuated tool
• Photographic Activity Test
  Photographic Activity Test
  Photographic Activity Test is an ISO standard test detailed in ISO 18916:2007 . Previous versions of the standard were numbered ISO 14523:1999, however it was updated and renumbered in 2007....
  
  , ISO 14523
• Picture and Text, in television technology - see Picture-in-picture

Medicine and biology

• Process Analytical Technology
  Process Analytical Technology
  Process analytical technology has been defined by the United States Food and Drug Administration as a mechanism to design, analyze, and control pharmaceutical manufacturing processes through the measurement of Critical Process Parameters which affect Critical Quality Attributes .The concept...
  
  
• Picture Arrangement Test
  Picture Arrangement Test
  The Picture Arrangement Test is a psychological test performed by giving the subject pictures of a person with various facial expressions. The administrator of the test then has the subject tell a story based on the images...
  
  
• Poly(A) Test, in Genetic Analysis
• Paddington Alcohol Test
  Paddington alcohol test
  The Paddington Alcohol Test was first published in the Journal of Accident and Emergency Medicine in 1996. It was designed to identify alcohol-related problems amongst those attending Accident and Emergency departments...
  
  , a screen for alcohol related problems
• Paroxysmal Atrial Tachycardia, a medical term for "sudden onset of fast heart beating"
• Phenylaminotetralin
  Phenylaminotetralin
  Phenylaminotetralins are novel histamine receptor ligands....
  
  , class of organic compounds, some of which have novel activity at histamine receptors
• Photoacoustic tomography
  Photoacoustic tomography
  Photoacoustic tomography , or photoacoustic computed tomography , is a materials analysis technique based on the reconstruction of an internal photoacoustic source distribution from measurements acquired by scanning ultrasound detectors over a surface that encloses the source under...
  
  , by an ultrasound scan
• Prism adaptation test

Computers

• Page Attribute Table
  Page Attribute Table
  The page attribute table is a processor supplementary capability extension to the page table format of certain x86 and x86-64 microprocessors...
  
  , an extension to the page table formats of x86 and x86-64 microprocessors
• Performance acceleration technology
  Performance acceleration technology
  The Intel Performance Acceleration Technology is technology built on to Intel i875 Canterwood mainboards and other Pentium 4 based motherboards that based on the Intel D875PBZ reference board...
  
   an Intel memory performance technology
• Port address translation, the most common type of network address translation.
• Process Analysis Toolkit
  PAT (model checker)
  PAT is a self-contained framework for composing, simulating and reasoning of concurrent, real-time systems and other possible domains. It comes with user friendly interfaces, featured model editor and animated simulator...
  
  , a model checking tool developed in the National University of Singapore
  National University of Singapore
  The National University of Singapore is Singapore's oldest university. It is the largest university in the country in terms of student enrollment and curriculum offered....
  
  
• Program Association Table, Program Specific Information metadata in a MPEG-2/DVB stream

Transportation

• Personal Automated Transport, or Personal rapid transit
• Lok Nayak Jayaprakash Airport
  Lok Nayak Jayaprakash Airport
  Patna Airport , also known as Jaiprakash Narayan International Airport, Patna , is an airport located southwest of Patna, the capital of state of Bihar in India...
  
  , the IATA code for the airport in India
• Patricroft railway station
  Patricroft railway station
  Patricroft railway station serves the Patricroft district of Eccles, England. The station is located on Green Lane, Patricroft just north of the junction with Cromwell Road...
  
  , England by National Rail station code
• PATransit, former name of the Port Authority of Allegheny County

Other uses

• PAT (American football)
• Port Arthur, Texas
  Port Arthur, Texas
  -Demographics:As of the 2000 census, there were 57,755 people, 21,839 households, and 14,675 families residing in the city. The population density was 696.5 people per square mile . There were 24,713 housing units at an average density of 298.0 per square mile...
  
  
• Profit After Tax
• Prodotto agroalimentare tradizionale
  Prodotto agroalimentare tradizionale
  Prodotto agroalimentare tradizionale , in Italy, is a list of traditional regional food products similar to the Protected Geographical Status...
  
  , a grade of Protected Geographical Status controlled by the government within Italy