Since 1998, the Casia Corporation Holland have been working on The Definitive TLA Wörterbuch to help people find their way in the ever growing intellectual chaos caused by the late-twentieth century tendency to use as many acronyms in daily communication as possible. Especially acronyms with a length of three letters have been and continue to be immensly popular, not only in Information and Communication Technology circles, but also among people in more mundane fields of labour; a tendency that has mushroomed with the advent of mobile communication and the combined growing popularity of Short Message Services.
At present, there are 7480 TLAs in the database.
Of these, 4477 are distinct, out of 17576 possible (25.47%).
Please click on a bar in the diagram that is displayed below, or enter a search-string.
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| P | ||
| PAA | Pan American Airlines | |
| Paranoid Abusive Authority (American) | ||
| PAB | Personal Address Book | |
| PAC | Pan African Congress | |
| Plaatsingsadviescommissie | ||
| political action committee | ||
| Probably Approximately Correct | ||
| Production Activity Control | ||
| PAD | Photo A Day | |
| Post Album Depression | ||
| Propaganda and Agitation Department | ||
| Psychologische Adviesdienst | ||
| PAE | Physical Adress Extension | |
| PAG | Présence et Action des Gaullisme | |
| PAH | Polycyclic Aromatic Hydrocarbon | |
| PAI | Pathogenic Avian Influenza | |
| PAK | Panzer Abwehr Kanone | |
| Progressief Akkoord | ||
| Provinciale Advies Kommissie | ||
| PAL | Permissive Action Link | |
| persoonlijk assistent voor leraren | ||
| Phase Alteration Line | ||
| Phillipine Airlines | ||
| Programmable Array Logic | ||
| PAM | Particle Accelerator Mishap | |
| Payload Assisted Module | ||
| Pluggable Authentication Module | ||
| Politieke Aandelen Markt | ||
| PAN | Partido de Acción Nacional (Mexico) | |
| Peroxyacetylnitraat | ||
| Personal Area Network | ||
| PAO | Postacademisch Onderwijs | |
| Public Affairs Officer | ||
| PAP | Papanicolaou | |
| Particulier à Particulier | ||
| People’s Action Party | ||
| PAR | Perimeter Acquisition Radar | |
| Positive Acknowledgment with Re-transmission | ||
| PAS | Para-aminosalicylzuur | |
| Plaatselijk Arbeids Secretariaat | ||
| Portable Antiquities Scheme | ||
| Programma Aanpak Stikstof | ||
| PAU | Pan American Union | |
| PAV | Perifeer Arteriële Vaatziekte | |
| PAW | Pompous Ass Words | |
| Preventief Afgeschoten Worden | ||
| PAX | Private Automatic Exchange | |
| PBA | Perfect Binary Array | |
| PBB | Polybroombifenylen | |
| PBC | Pieter Baan Centrum | |
| Proof By Contradiction | ||
| Provinciale Bibliotheek Centrale | ||
| PBF | Power Burst Facility | |
| Prins Bernhard Fonds | ||
| PBH | Primordial Black Hole | |
| PBI | Pigeon Based Internet | |
| Project Beleidsontwikkeling Internaatsvormingswerk | ||
| PBL | Problem-Based Learning | |
| PBM | Portable Bitmap | |
| PBN | Performance Based Navigation | |
| PBO | Permanent Beat Officer | |
| Publiekrechtelijke Bedrijfsorganisatie | ||
| PBR | President’s Budget Reques | |
| PBT | Platform Béta Techniek | |
| PBX | Private Branch Exchange | |
| PCA | Permanent Court of Arbitration | |
| Polycyclische aromaat | ||
| Power Calibration Area | ||
| Principle Component Analysis | ||
| PCB | Parti Communiste Belge | |
| Polychloorbifenyl | ||
| polychlorinated biphenyls | ||
| Printed Circuit Board | ||
| Program Control Block | ||
| Protestants Christelijke Bond | ||
| Protestantse Coöperatieve Begrafenisonderneming | ||
| PCC | Parti Communista de Cuba | |
| PC Consument | ||
| Prins Claus Conservatorium | ||
| Private Cloud Compute | ||
| Protestants Christelijk Centrum | ||
| PCE | Partido Comunista Español | |
| PCF | Parti Communiste Français | |
| PCG | Pentecostal Church of God | |
| Pentium Compiler Group | ||
| Performance Communications Group | ||
| Performance Contracting Group | ||
| Philippine Coast Guard | ||
| Policy Coordination Group | ||
| Polo en zwemClub Gorinchem | ||
| Professional Contractors Group | ||
| Protein Crystal Growth | ||
| Provinciale Chronisch zieken en Gehandicaptenraad Groningen | ||
| Public Consulting Group | ||
| Publishers Communication Group | ||
| Pull-Cord Generator | ||
| PCI | Partito Comunista Italiano | |
| Peripheral Component Interconnect | ||
| Pulsed Current Injection | ||
| PCL | Portable Class Library | |
| Postcodeloterij | ||
| Power Corruption and Lies | ||
| Printer Control Language | ||
| PCM | Perscombinatie Meulenhoff & Co | |
| Personal Computer Magazine | ||
| Pulse-Code Modulatie | ||
| PCN | Penalty Charge Notice | |
| Post Christi Natum | ||
| PCO | Protestants Christelijke Onderwijsvakorganisatie | |
| Public Carriage Officer | ||
| PCP | Parental Control Profile | |
| Partial Chemosynthetic Production | ||
| Partido Communista Português | ||
| Phencyclidine | ||
| Pig Coloured People | ||
| Prim Cache Population | ||
| PCR | Polymerase Chain Reaction | |
| Postchèquerekening | ||
| PCS | Palliatieve Coping Strategie | |
| Personal Communication Services | ||
| Posterboy Creationist Stupidity | ||
| Posterboy for Creationist Stupidity | ||
| PCT | Peak Cladding Temperature | |
| PCX | PiCture eXchange | |
| PCZ | Protestants Christelijke [vereniging tot bevordering van sociale en pedagogische] Zorg | |
| PDA | Pathological Demand Avoidance | |
| Personal Digital Assistent | ||
| PDB | Pedagogisch Didactisch Bekwaamheid | |
| PDC | Personal Digital Communications | |
| Planetary Defence Council | ||
| Prada Death Camp | ||
| Processor Dependend Code | ||
| PDD | Pre-Dinner Dip | |
| Presidential Decision Directive | ||
| PDE | Plug-in Development Environment | |
| Processing Development Environment | ||
| Portable Document Format | ||
| Postscript Description Format | ||
| PDI | Powered Descent Initiation | |
| PDL | Project description language | |
| PDM | Persistent Domain Model | |
| Philips Dupont Magnetics | ||
| Product Data Management | ||
| Program Decision Memoranda | ||
| PDO | PHP Data Objects | |
| PDP | Programmed Data Processor | |
| PDQ | Pretty Damn Quick | |
| PDS | Persistent Data Storage | |
| Please Don't Shoot | ||
| Prikkelbare Darm Syndroom | ||
| PDT | Pacific Daylight Time | |
| PDU | Packet Data Unit | |
| PDV | Productschap Diervoeder | |
| PEC | Parlementaire Enquete Comissie | |
| PH EDN Combinatie | ||
| PEG | Parsing Expression Grammar | |
| PEK | Poly-Evolver Keys | |
| PEM | Programming Environment Meeting | |
| PEO | Profieleigenarenoverleg | |
| PEP | Politically Exposed Person | |
| Post Exposure Profylaxe | ||
| Propellant Evaluation Program | ||
| Python Enhancement Proposal | ||
| PES | Package Evolution Service | |
| Paul's Extreme Stretch | ||
| Penis Enlargement Surgery | ||
| PET | Personal Electronic Transactor | |
| Poly Ethylene Terephthalate | ||
| Positron Emission Tomography | ||
| PFA | Pretty Fucking Amazing | |
| PFC | Personal filing cabinet | |
| PFD | Personal Floatation Device | |
| PFE | Premises, Facilities and Equipment | |
| PFJ | People's Front of Judea | |
| PFK | Programmable function keys | |
| PFL | Positive Feedback Loop | |
| PFM | Printer Font Metrics | |
| PFO | Patient Falling Over | |
| Pissed and Fell Over | ||
| PFS | Pretty Freaking Stupid | |
| Process Flow Scheduling | ||
| Progression Free Survival | ||
| PFT | Prime Focus Technologies | |
| PGA | Pin Grid Array | |
| Professional Golfers' Association | ||
| PGD | Productschap Gedistilleerde Dranken | |
| PGE | Philip Glass Ensemble | |
| Pizza Graph Effect | ||
| PGI | Piek Gas Installatie | |
| PGM | Pigeon Guided Missiles | |
| Portable Graymap | ||
| PGN | Portable game notation | |
| PGP | Pretty Good Privacy | |
| PGT | Patient Got Thumped | |
| PHD | Philosophiae Doctor | |
| PHE | Public Health England | |
| PHI | Processor to HP-IB Interface | |
| Protected Health Information | ||
| PHK | Prins Hendrik Kade | |
| PHM | Pretty Hate Machine | |
| PHO | Potentially Hazardous Object | |
| PHP | Parents Helping Parents | |
| Personal Home Page | ||
| PHP Hypertext Preprocessor | ||
| PIA | Pakistan International Airlines | |
| Privacy Impact Analyse | ||
| PIB | Pre-flight Information Bulletin | |
| PIC | Particle-In-Cell | |
| Partner In Crime | ||
| Pilot In Command | ||
| Programmable Intelligent Computer | ||
| Prostitutie Informatie Centrum | ||
| PID | Pelvic inflammatory disease | |
| Process IDentification | ||
| Project initiation document | ||
| PIE | Partners In Education | |
| PIF | Program Information File | |
| PII | Personal Identifiable Information | |
| PIK | Paid In Kind | |
| Payment In Kind | ||
| Platform Integration Kit | ||
| PIN | Personal Identification Number | |
| Persoonlijk Identificatie Nummer | ||
| Postal Index Number | ||
| progressive inflammatory neuropathy | ||
| prostatic intraepithelial neoplasia | ||
| PIO | Programmed I/O | |
| PIP | Picture In Picture | |
| Poly Implant Prothese | ||
| PIR | Public Interest Registry | |
| PIS | Porno In SVN | |
| PIV | Particle Image Velocimetry | |
| Peak Inverse Voltage | ||
| Personal Identity Verification | ||
| Physical Inventory Verification | ||
| Pig Immunodeficiency Virus | ||
| Pinnacle Internet Viewer | ||
| Plena Ilustrita Vortaro | ||
| Post Implementation Verification | ||
| Post Indicator Valve | ||
| Powered Industrial Vehicle | ||
| PIW | Person In Water | |
| PKB | Pronte Kleine Borstjes | |
| PKI | Partai Komunis Indonesia | |
| Programmadirectie Kennis en Innovatie | ||
| Public Key Infrastructure | ||
| PKK | Partiya Karkeren Kurdistan | |
| PKT | Pronte Kleine Tietjes | |
| PKV | Pluimvee en Konijnfokvereniging | |
| Prijs Karel Verleye | ||
| Private Krankenversicherung | ||
| Project KustVakken | ||
| PKZ | Prehistorische Kanker Zooi | |
| PLA | PolyLactic Acid | |
| Port of London Authority | ||
| Programmable Logic Array | ||
| PLB | Personal Locator Beacon | |
| PLC | Programmable Logic Controller | |
| Programmable Logic Controller | ||
| PLD | Pre Lunch Dip | |
| Programmable Logic Device | ||
| PLG | Predestined Landing Ground | |
| PLL | Phase Locked Loop | |
| PLM | Paradise Locker Meats | |
| Paris-Lyon-Méditerranée | ||
| Plant Lifecycle Management | ||
| Product Lifecycle Management | ||
| PLO | Palestine Liberation Organisation | |
| PLP | Parliamentary Labour Party | |
| PLS | Property Ladder Syndrome | |
| PLT | Parkstad Limburg Theaters | |
| PLU | Price Look-Up | |
| Primary Logic Unit | ||
| PMA | Physical Memory Address | |
| PMC | Perfecte Mensen Club | |
| PMD | Polen Moeten Dood | |
| PME | Photorealistic Material Editing | |
| PMF | Print Mail Factory | |
| Probability mass function | ||
| Project Management Foundation | ||
| PMG | Parliamentary Monitoring Group | |
| Pat Metheny Group | ||
| Private Media Group | ||
| PMN | Pruts MoederNeuker | |
| PMO | Parkeermeteroorlog | |
| PMP | Parallel Marker Pass | |
| Parsed Marker Particles | ||
| Peed My Pants | ||
| PMQ | Prime Minister's Questions | |
| Private Maried Quarters | ||
| PMS | Pantone Matching System | |
| Parked Motorcycle Syndrome | ||
| PMV | Persoonlijke en Maatschappelijke Vorming | |
| PNC | Police National Computer | |
| PNE | Peaceful Nuclear Explosions | |
| PNG | Portable Network Graphic | |
| Promoteam Natuurkundig Gezelschap | ||
| PNI | Perpetual Nuclear Inferno | |
| Presidential Nuclear Initiative | ||
| PNM | Portable aNyMap | |
| PNN | Promovendi Netwerk Nederland | |
| PNO | Potentiële Neuk Objecten | |
| Prima Neuk Objecten | ||
| PNP | Plug aNd Play | |
| PNT | Position Navigation and Timing | |
| PNV | Project Nederland Veganland | |
| PNW | Pacific North West | |
| POA | Port of Amsterdam | |
| POB | Per Ontvangen Bericht | |
| Persons On Board | ||
| Praktijk Opleidings Boek | ||
| POC | People Of Color | |
| Predator Operation Cell | ||
| Proof of Concept | ||
| POD | Plain Old Documentation | |
| POE | Power Over Ethernet | |
| POG | Project Officers Group | |
| POH | Pilot's Operating Handbook | |
| POI | Point Of Interaction | |
| Point Of Interest | ||
| POM | Program Objective Memorandum | |
| Project Object Model | ||
| PON | Passive Optical Network | |
| Populistische Omroep Nederland | ||
| POP | Persistent Organic Pollutants | |
| Point Of Presence | ||
| Post Office Protocol | ||
| POQ | Periodic Order Quantity | |
| POS | Partition Of Sums | |
| Piece Of Shit | ||
| Point Of Sale | ||
| POT | Post Ordination Training | |
| POV | Persistence Of Vision | |
| Point Of View | ||
| Polarized Optical Vortex | ||
| POW | Prisoner Of War | |
| POX | Plain Old XML over HTTP | |
| PPA | Past Participle Adjective | |
| Per Particle Attributes | ||
| Persoonlijke Profiel Analyse | ||
| Planning, Preparation And Assessment | ||
| PPB | Part Period Balancing | |
| PPC | Pair Programming Chair | |
| Pelgrim's Pride Company | ||
| Plastic Pollution Coalition | ||
| Plinten- & PlankenCentrale | ||
| Plutonium Production Process | ||
| Prospective Parliamentary Candidate | ||
| Protected Phenomenon Chip | ||
| PPD | para-phenylenediamine | |
| Post Parting Depression | ||
| Postscript Printer Description | ||
| Publiek Private Discussie: | ||
| PPE | Permanent Penile Enlargement | |
| Personal Protective Equipment | ||
| PPG | Pacific Proving Ground | |
| Palm Productions GmbH | ||
| Points Per Gallon | ||
| PPI | Pixels Per Inch | |
| PPK | Personal Preference Kit | |
| PPL | Physically Plausible Lighting | |
| Plasma Physics Laboratory | ||
| Private Pilot Licence | ||
| PPM | Parts Per Million | |
| Portable PixMap | ||
| Pre Production Meeting | ||
| PPN | Pre-assigned Port Numbers | |
| PPP | Pakistan Peoples Party | |
| Patricia 'Pubergrrl' Paay | ||
| Peace, Pasta and Pirates | ||
| Per Pay Period | ||
| Personal Pension Plan | ||
| Piss Poor Planning | ||
| Plan Puebla Panamá | ||
| Plutonium Production Process | ||
| Point-to-Point Protocol | ||
| Profit, People, Planet | ||
| Public Private Partnership | ||
| Purchasing Power Parity | ||
| PPQ | Pulses Per Quarter | |
| PPR | Politieke Partij Radicalen | |
| Pulsed Plasma Rocket | ||
| PPS | Parliamentary Private Secretary | |
| Particles Per Second | ||
| Physically Plausible Shaders | ||
| Publieke en Private Samenwerking | ||
| PPT | PowerPoinT | |
| Pulsed Plasma Thruster | ||
| PPU | Physics Processing Unit | |
| PPV | Peter-Paul Verbeek | |
| PQT | Pizza Quantum Telepathy | |
| PRA | Pine Ridge Agency | |
| Presidential Records Act | ||
| Probabilistic Risk Assessment | ||
| PRB | Persoonsgebonden ReïntegratieBudget | |
| PRC | Parmigiano Reggiano Consortium | |
| Pleitgenootschap Rota Carolina | ||
| PRF | Pixel Run Format | |
| Polícia Rodoviária Federal | ||
| Primary Risk Factor | ||
| PRI | Primary Rate Interface | |
| PRJ | Pacific Rim Job | |
| PRL | Physical Review Letters | |
| PRM | Partner Relationship Management | |
| PRO | Persistente Reclame-Onderdelen | |
| Public Record Office | ||
| PRP | Personnel Reliability Program | |
| Post Rapture Party | ||
| PRS | Payload Retention System | |
| Personal Radio Service | ||
| Personal Reader System | ||
| Plasma Radiation Source | ||
| Poverty Reduction System | ||
| Precision Ranging System | ||
| Primary Reference Source | ||
| PRU | Princess Royal University | |
| PRV | Peter R. de Vries | |
| PSA | Probabilistic Safety Assessment | |
| Professional Services Automation | ||
| PsychoSociale Arbeidsbelasting | ||
| PSB | Pet Shop Boys | |
| Program Specification Block | ||
| Pseudo Scientific Bullshit | ||
| PSC | Pseudo Scientific Crap | |
| PSD | Partidul Social Democrat | |
| Payment Services Directive | ||
| Pennsylvania School for the Deaf | ||
| Pesticides Safety Directorate | ||
| PhotoShop Design | ||
| Protein Sequence Database | ||
| PSE | Pale Soft Exudative | |
| PSF | Python Software Foundation | |
| PSI | Partito Socialista Italiano | |
| Paul Scherrer Institute | ||
| Per Square Inch | ||
| Popular Culture, Sustainability and Innovation | ||
| pounds per square inch | ||
| PSN | PlayStation Network | |
| PSO | Progressief StudentenOverleg | |
| PSP | Pacifistisch Socialistische Partij | |
| PaintShop Pro | ||
| Personnel Security Program | ||
| Playstation Portable | ||
| primary spontaneous pneumothorax | ||
| PSS | Packet Switched Service | |
| Princeton Satellite Systems | ||
| PST | Pacific Standard Time | |
| Pocket Survival Tool | ||
| PSU | Police Support Unit | |
| Power Supply Unit | ||
| PSV | Philips Sportvereniging | |
| PTB | Physikalisch-Technische Bundesanstalt | |
| PTC | Parents Television Council | |
| Passive Thermal Control | ||
| Proper Tail Calls | ||
| PTI | Physical Training Instructor | |
| PTO | Patent and Trademark Office | |
| please turn over | ||
| Primaire Tumor Onbekend | ||
| PTP | Picture Transfer Protocol | |
| Point-to-Point | ||
| Probability To Penetrate | ||
| Profitable To Promise | ||
| PTS | Propellant Transfer System | |
| PTT | Post Telefoon Telegraaf | |
| Posta ve Telgraf Teşkilatı | ||
| Push The Tempo | ||
| PUC | Publicatieplatform UitvoeringsContent | |
| PUE | Power usage effectiveness | |
| PUF | Presses Universitaires de France | |
| PUI | Perceptual User Interface | |
| PUK | Personal Unlocking Key | |
| PUP | PARC Universal Packet protocol | |
| Princeton University Press | ||
| Progressive Unionist Party | ||
| PVA | Plan Van Aanpak | |
| PVC | Polyvinylchloride | |
| Positive Void Coefficient | ||
| PVD | Physical Vapour Desposition | |
| PVE | Proxmox Virtual Environment | |
| PVL | Planbureau Voor de Leefomgeving | |
| PVM | Priemgetal Voor Mannen | |
| PVP | Path Vector Protocol | |
| PVR | Personal Video Recorder | |
| PVS | Persistent Vegetative State | |
| Persoonlijk VerantwoordelijkheidsSchema | ||
| Peter Van Soest | ||
| Peter Van Stijn | ||
| Post Viraal Syndroom | ||
| Post-Vaccinaal Syndroom | ||
| Specification and Verification System | ||
| PVV | Partij Voor de Verdraaiing | |
| Partij Voor de Volksverlakkerij | ||
| Partij voor de Vrijheid | ||
| Partij Vreemde Vogels | ||
| PWA | Prins Willem Alexander | |
| PWC | PriceWaterhouseCoopers | |
| PWD | Programmed Warhead Detonation | |
| PWF | Plastic Window Federation | |
| PWL | Preemptive Wear Leveling | |
| PWM | Pulse-Width Modulation | |
| PWN | Provinciaal Waterleidingbedrijf van Noord-Holland | |
| Puur Water en Natuur | ||
| PWR | Pressurised Water Reactor | |
| PWS | Prince William Sound | |
| PWT | Pacific War Time | |
| PXE | Pre-boot eXecution Environment | |
| PXR | Pixar | |
| PYT | Pretty Young Thing | |
