| SAM | Samuel |
| SAM | Surface-to-Air Missile |
| SAM | Sequential Access Method |
| SAM | Substance Abuse Monitoring (various organizations) |
| SAM | Seattle Art Museum |
| SAM | Software Asset Management |
| SAM | Sales and Marketing (Australia) |
| SAM | Support and Maintenance (various companies) |
| SAM | Sustainable Asset Management |
| SAM | System Administration Manager (HP) |
| SAM | Samedi (French: Saturday) |
| SAM | Security Accounts Manager (Windows registry) |
| SAM | System for Award Management |
| SAM | Secret Agent Man |
| SAM | Senior Account Manager (various companies) |
| SAM | Singapore Art Museum |
| SAM | Something About Myself (creative achievement reporting) |
| SAM | Security Account Manager |
| SAM | Serbia and Montenegro |
| SAM | Simulation and Modeling |
| SAM | Strategic Asset Management |
| SAM | System Availability Management (Hewlett Packard) |
| SAM | Science and Mathematics |
| SAM | Sveikatos Apsaugos Ministerijos (Lithuanian: Ministry of Emergency Health) |
| SAM | Single Adult Ministry (various locations) |
| SAM | Science of Advanced Materials (American Scientific Publishers) |
| SAM | Servicio de Atención Médica (Spanish: Health Care Service) |
| SAM | Shoot Apical Meristem (plants) |
| SAM | Society for American Music |
| SAM | Software and More |
| SAM | Société Anonyme Monégasque (French: Anonymous Monaco Company; Monaco) |
| SAM | Society of American Magicians (St. Louis, MO, USA) |
| SAM | S-Adenosyl-L-Methionine |
| SAM | Speed Art Museum (Louisville, KY) |
| SAM | South African Museum (Cape Town, South Africa) |
| SAM | Susquehanna Art Museum (Harrisburg, PA) |
| SAM | Schultze Asset Management (George Schultze; Purchase, NY) |
| SAM | Self-Assessment Module |
| SAM | System for Accountability and Management (various organizations) |
| SAM | Semi-Automatic Method |
| SAM | Self Assembled Monolayer |
| SAM | Session Allocation Manager (software) |
| SAM | Self-Assembled Monolayer |
| SAM | Sterile Alpha Motif |
| SAM | Significance Analysis of Microarrays |
| SAM | AmiPro (file extension) |
| SAM | Society for Acute Medicine (UK; est. 2000) |
| SAM | Simply about Music (online radio) |
| SAM | Social Accounting Matrix |
| SAM | Sigma Alpha Mu |
| SAM | Suspicious Activity Monitoring (software) |
| SAM | Software Architecture Model |
| SAM | Stand Alone Modem |
| SAM | Security Accounts Manager |
| SAM | Strategic Systems for Adaptable Metacognition |
| SAM | Smart Atm Module |
| SAM | Syndicated Audio Messaging |
| SAM | Service Availability Management |
| SAM | Stream Audio Manager |
| SAM | Software Access Module |
| SAM | System Administration Manager |
| SAM | Sample File |
| SAM | Stm Access Module |
| SAM | Security Access Manager |
| SAM | Storage Archive Manager |
| SAM | Scsi Architectural Model |
| SAM | Storage Application Model |
| SAM | Sprint Account Manager |
| SAM | Scalable Architecture for Multimedia |
| SAM | Storage Access Method |
| SAM | Speech Aware Multimedia |
| SAM | Special Action Model |
| SAM | Software Assurance Membership |
| SAM | System Assurance Manage |
| SAM | Software Access Menu |
| SAM | System Adaptability Manager |
| SAM | Simple Access Mode |
| SAM | Symantec Antivirus for Macintosh |
| SAM | Security Access Multiport |
| SAM | Storage Area Manager |
| SAM | Super Absorbent Material |
| SAM | Stand Alone Module (various companies) |
| SAM | Self-Assembled Molecular |
| SAM | Student Achievement Measures (task force; Colorado) |
| SAM | Shared-Appreciation Mortgage |
| SAM | School of Aviation Medicine |
| SAM | Severe Acute Malnutrition |
| SAM | Split and Merge |
| SAM | Strategic Account Manager |
| SAM | Sexual Abuse of a Minor |
| SAM | Setup and Maintenance |
| SAM | Sahabat Alam Malaysia (Friends of the Earth Malaysia) |
| SAM | St. Andrews Medical (various locations) |
| SAM | School of Aerospace Medicine |
| SAM | Society for Adolescent Medicine |
| SAM | Space-Available Mail |
| SAM | Special Air Mission |
| SAM | Seminar for Applied Mathematics |
| SAM | Software Automatic Mouth (Apple II) |
| SAM | Skype Answering Machine (various companies) |
| SAM | Servicing And Maintenance |
| SAM | Storage Area Management |
| SAM | Service Account Manager |
| SAM | Systolic Anterior Motion |
| SAM | Scheduled Ancient Monument (UK) |
| SAM | Suginami Animation Museum (Tokyo, Japan) |
| SAM | Society for the Advancement of Management |
| SAM | Scanning Auger Microscopy |
| SAM | Serial Access Memory |
| SAM | Supplier Agreement Management |
| SAM | Stat-A-Matrix (Edison, NJ) |
| SAM | Southern Annular Mode (meteorology) |
| SAM | Secure Access Module |
| SAM | Support Account Manager |
| SAM | Separate Account Management |
| SAM | Small Acreage Management (Colorado) |
| SAM | Subsequent Address Message (CCS #7 ITU-T) |
| SAM | Southwestern At Memphis (now Rhodes College) |
| SAM | Spartanburg Art Museum (Spartanburg, SC) |
| SAM | Sound Absorbing Material |
| SAM | Stop Annoying Me |
| SAM | Sydney Alumni Magazine (University of Sydney; Sydney, Australia) |
| SAM | Sagawa Art Museum (Shiga, Japan) |
| SAM | Service Availability Management (various companies) |
| SAM | Scientific American Medicine |
| SAM | Streaming Audio Manager (software) |
| SAM | Sequence Alignment and Modeling |
| SAM | Station for Atmospheric Measurements (meteorology) |
| SAM | Simple Asynchronous Messaging (computing) |
| SAM | Salaire Annuel Moyen (French: Average Annual Salary) |
| SAM | Spectral Angle Mapper |
| SAM | Service Associate Member |
| SAM | Shimane Art Museum (Japan) |
| SAM | Sociedad Aeronáutica de Medellín (airline, Colombia) |
| SAM | Stratospheric Aerosol Measurement |
| SAM | SCSI-3 Architecture Model |
| SAM | Served Available Market |
| SAM | Students At Macquarie (Australia) |
| SAM | Serviceable Available Market (marketing) |
| SAM | Spin Angular Momentum (physics) |
| SAM | Software Acquisition Management |
| SAM | Systems Acquisition Management |
| SAM | Subsea Accumulator Module (energy exploration) |
| SAM | Service Assurance Manager (Smarts) |
| SAM | Search Asset Management (eXtéres) |
| SAM | Seismic Acoustic Magnetic (US DoD, Test and Evaluation) |
| SAM | South Australian Matriculation |
| SAM | Systolic Anterior Movement |
| SAM | Single Asian Male |
| SAM | Summer Annual Meeting |
| SAM | Symantec Anti-Virus for Macintosh |
| SAM | Saginaw Art Museum (Saginaw, Michigan) |
| SAM | Single Agency Manager (Pentagon Renovation Project) |
| SAM | Security Administration Manager |
| SAM | Service Access Multiplexer (Bellcore) |
| SAM | South American Office (ICAO) |
| SAM | Smart-Ass Masochist |
| SAM | Sandy Area Metro |
| SAM | Site Acquisition Manager |
| SAM | Sewer Access Module (robot used to pull fiber through sewers) |
| SAM | Sociedad de Arquitectos Mexicanos (Spanish: Society of Mexican Architects; est. 1905) |
| SAM | Special Assets Management |
| SAM | Super Amazing Monkey (wrestling) |
| SAM | Sponsored Awards Management |
| SAM | System Administrator's Manual |
| SAM | Solutions for Advanced Manufacturing (Canada) |
| SAM | System Administration Manual |
| SAM | Staging Area Manager |
| SAM | Special Administrative Measure |
| SAM | System Administration Module |
| SAM | Self-Appointed Manager |
| SAM | South American Monsoon |
| SAM | Strategically Altered Mutant |
| SAM | System Access Module |
| SAM | Service Activation Manager (Sigma Systems) |
| SAM | Special Attention Meeting |
| SAM | Structural Aluminum Malleable (type of splint) |
| SAM | Self Adjusting Mattress |
| SAM | Synchronous Access Mode |
| SAM | Solar Advisor Model |
| SAM | Semi-Analytic Model (galactic modeling) |
| SAM | Service Availability Matrix (Cisco) |
| SAM | Security Authentication Module |
| SAM | Student Association of Missouri |
| SAM | Single Accumulator Multiplier (cryptography) |
| SAM | Separate Absorption Multiplication |
| SAM | Single-use Authentication Mechanism (IETF, Kerberos) |
| SAM | System Assurance Manager (NASA) |
| SAM | Supplemental Assay Method |
| SAM | Speech-Aware Multimedia |
| SAM | Self Assembling Material |
| SAM | Super-Automated Machine (early Sesame Street) |
| SAM | Situation Awareness Mode (radar) |
| SAM | Scalable ADSL Modem (Integrated Telcom Express) |
| SAM | Syndicat des Agences de Mannequins (French: Union of Model Agencies) |
| SAM | Sprint Account Manager (Sprint) |
| SAM | Support Agreement Manager |
| SAM | Sun and Aureole Measurement |
| SAM | St. Albans Museum |
| SAM | Subscriber Access Multiplexer |
| SAM | Self Automated Machine |
| SAM | Search Area Map (search and rescue operations) |
| SAM | Status Activity Monitor |
| SAM | Small Angle Maneuver |
| SAM | Soldier Assignment Module |
| SAM | System Available Memory |
| SAM | Stratospheric Aerosol Monitor |
| SAM | Strategic Alignment Management |
| SAM | Synchronous Address Multiplexor |
| SAM | Standard Analysis Method |
| SAM | Solent Advanced Motorcyclists (UK) |
| SAM | Sesame Access Manager |
| SAM | Service Automation Module (Opsware) |
| SAM | Specialized Aircraft Maintenance |
| SAM | Sub-Array Module |
| SAM | Status of Acquisition Message |
| SAM | Stratified Anisotropic Media |
| SAM | Stupid Ass Meeting |
| SAM | Small Aperture Module (laser) |
| SAM | Scientific Archive Management |
| SAM | Sociaal Actieve Mensen |
| SAM | Salary Administration Manual |
| SAM | Stedelijke Adviesraad Multiculturele Stad Den Haag |
| SAM | Shallow Angle Metallization |
| SAM | Synchronous/Asynchronous Multiplexer |
| SAM | Stockage for Availability Method |
| SAM | Student Assessment and Measurement |
| SAM | Sensor Arrays and Multichannel Signal Processing |
| SAM | Short-Action Magnum (ammunition) |
| SAM | Site Availability Mode |
| SAM | Standard Allowable Minutes |
| SAM | Service Activation Meeting |
| SAM | Standards Appenninici e Mediterranei (Italy) |
| SAM | Super-rate Adapter Module (Newbridge) |
| SAM | Sleep/Activity Monitor |
| SAM | Space-Viewing Analog-Electronic Module |
| SAM | Scoping and Mobilisation |
| SAM | Serving Area Multiplex Sites |
| SAM | Seeds Against Malnutrition |
| SAM | Small Alarm Manager (Fibercorp) |
| SAM | Sum of Available Market |
| SAM | Student Affairs Monitor |
| SAM | Segment Access Manager |
| SAM | Savannah, Americus and Montgomery Railroad Company |
| SAM | Staff Action Memorandum |
| SAM | Script Applicator Mechanism |
| SAM | Setup And Maintenance application |
| SAM | Service Adaptation Module (Tachion) |
| SAM | System Assimilation Mercator (French) |
| SAM | Scanning Acoustic Microscopy/Microscope |
| SAM | Surveillance/Systems Analysis Model |
| SAM | Southern Aussie Muscle (car club: New Zealand) |
| SAM | Sprint Access Management (Sprint) |
| SAM | Systems Activity Model |
| SAM | Sociedad Ambiente Marino |
| SAM | Supplemental Aid to Maintenance |
| SAM | Setup Acknowledgment Message (ITI) |
| SAM | System Alteration Modification |
| SAM | Space Advisory Message |
| SAM | System Acquisition Manager/Management |
| SAM | Switched Access with Multiplexer |
| SAM | Safely Administering Medication (robotic pharmacist) |
| SAM | Social Ad Marketing |
| SAM | Sub-Assembly Module (Bellcore) |
| SAM | Shadow Activity Monitor (DataDirect) |
| LU | Luxembourg |
| LU | Love You |
| LU | Liberty University (Lynchburg, VA, USA) |
| LU | Land Use (various organizations) |
| LU | Lund University (Sweden) |
| LU | Lincoln University (New Zealand) |
| LU | London Underground |
| LU | Lancaster University (UK) |
| LU | Luzern (Lucerne; Swiss Canton) |
| LU | La Union |
| LU | Logical Unit |
| LU | Lamar University (Beaumont, TX) |
| LU | Luton (postcode, United Kingdom) |
| LU | Leeds United (football club; UK) |
| LU | Lucent Technologies (stock symbol) |
| LU | Lawrence University (Appleton, WI, USA) |
| LU | Lehigh University (Bethlehem, PA) |
| LU | Lutetium |
| LU | Lieferumfang (German: scope of delivery) |
| LU | Level-Up (gaming) |
| LU | Loughborough University (UK) |
| LU | Laurentian University (Sudbury, Ontario, Canada) |
| LU | Langston University (Langston, OK) |
| LU | Lars Ulrich (drummer for band Metallica) |
| LU | Lindenwood University (St. Charles, Missouri) |
| LU | Lower Upper |
| LU | Lakehead University (Ontario, Canada) |
| LU | Lego Universe (video game) |
| LU | Lucca, Toscana (Italian province) |
| LU | Learning Unit |
| LU | Lingnan University (Hong Kong) |
| LU | Landscape Unit |
| LU | Lynn University (Boca Raton, Fl) |
| LU | Location Update (GSM) |
| LU | Longwood University (Farmville, VA) |
| LU | Lost Universe (anime) |
| LU | Line Unit |
| LU | LeTourneau University (Longview, Texas) |
| LU | Lambuth University (Jackson, Tennessee) |
| LU | Lebanese University |
| LU | Library Unit |
| LU | Livestock Unit |
| LU | Lacrosse Unlimited |
| LU | Lefevre Utile (French: Bakery) |
| LU | Latvian University |
| LU | Loader/Unloader |
| LU | Least Utilization |
| LU | Local Envelopes (Scott Catalogue prefix; philately) |
| OS | Operating System |
| OS | Oh Shoot (polite form) |
| OS | Oculus Sinister (Latin: Left Eye) |
| OS | Open Source |
| OS | Open Systems |
| OS | On Schedule |
| OS | Old Style |
| OS | Old School |
| OS | Online Services |
| OS | One Side |
| OS | Overall Survival |
| OS | On-Site |
| OS | Off Screen (cinematography) |
| OS | Outer Space |
| OS | Out of Stock |
| OS | Office of the Secretary |
| OS | Overseas |
| OS | Office Support |
| OS | Oxidative Stress |
| OS | Ordnance Survey |
| OS | Oregon State (also seen as OSU) |
| OS | Omaha Steaks (meat company) |
| OS | Old Style (or Old System; referring to Julian Calendars) |
| OS | Orlando Sentinel (Orlando, FL newspaper) |
| OS | Outsourcing Services |
| OS | Output Status |
| OS | Official Statement (government finances) |
| OS | Our Savior |
| OS | Austrian Airlines (IATA airline code) |
| OS | Operational Security |
| OS | Old Stuff :-) |
| OS | Ocean Springs (Mississippi) |
| OS | Oversize |
| OS | Operations Support (various organizations) |
| OS | Oliver Stone (director) |
| OS | Osmium |
| OS | Orioles (Baltimore baseball team) |
| OS | Old Spice (after shave brand) |
| OS | Ocean Shores (Washington) |
| OS | Overall Satisfaction |
| OS | Out-of-Service |
| OS | Overshoot |
| OS | Owen Sound (City, Canada) |
| OS | Operator Services (various agencies) |
| OS | Off Stage |
| OS | Ossetian (language identifier; RFC 3066) |
| OS | On Scene |
| OS | Over the Shoulder (cinematography) |
| OS | Oversold (stock market) |
| OS | Oxygen Sensor |
| OS | Outlaw Star (action-anime) |
| OS | Only Son |
| OS | Os Giken (automotive racing parts manufacturer) |
| OS | Observational Study |
| OS | Orthopedic Surgeon |
| OS | Over Speed |
| OS | Operations Specialist (USN Rating) |
| OS | Open Sockets (Diablo II gaming) |
| OS | Ouabain-Sensitive |
| OS | Optical Scanning |
| OS | Oughtred Society (est. 1991; slide rule collectors) |
| OS | Over Stock |
| OS | Olympiska Spelen (Swedish: Olympic Games) |
| OS | Own Ship |
| OS | Old Saxon |
| OS | Oberseminar |
| OS | Outdoor Skills |
| OS | Official Solicitor (UK) |
| OS | Osijek, Croatia (license plate) |
| OS | Outstation |
| OS | Organizational Support |
| OS | Operserv (IRC Operator Server) |
| OS | Onboard Software |
| OS | Ocean Surveillance |
| OS | Ordinary Seaman |
| OS | Off Scene |
| OS | Office of Security |
| OS | Office Superintendent |
| OS | Obsidian Sanctum (World of Warcraft) |
| OS | Ordinary Seaman (Canadian naval rank) |
| OS | Operations Squadron |
| OS | Order Statistic |
| OS | Orbital Station |
| OS | Office of Systems |
| OS | Oil Separator |
| OS | Output Spy |
| OS | Office of Sustainability |
| OS | Operating Standard |
| OS | Operating Statement |
| OS | Ohr Somayach (school) |
| OS | Opening Snap (mitral valve) |
| OS | Offensive Support |
| OS | Optical Sight |
| OS | Ouvrier Spécialisé (French: semi-skilled worker) |
| OS | Obiettivi Specifici |
| OS | Open Skies treaty |
| OS | Officer's Statement (performance evaluation) |
| OS | Observation Squadron |
| OS | Operational Suitability |
| OS | Orthopterists' Society |
| OS | Object Slice |
| OS | Operating Strength |
| OS | Organized Stalking |
| OS | Optical Silicon (semiconductor chip components) |
| OS | Over Shield (Halo video game) |
| OS | Overtime Scheduled |
| OS | Oblates of Wisdom |
| OS | Operationalizing the Strategy |
| OS | Ogawa Shigeo (Engines) |
| OS | Otm Shank Jazz Quintet (band) |
| OS | Organic Signal |
| OS | Orienting Station (surveyed reference location for artillery position) |
| OS | Ordnance Specification |
| OS | Operational Superintendence (on overtime forms) |
| OS | Old Silcoatian (Silcoates School, Wakefield, UK) |
| DL | Download |
| DL | Drivers License |
| DL | Definition List (HTML) |
| DL | Disabled List (sports) |
| DL | Description Logic |
| DL | Double-Layer |
| DL | Down (Stage) Left |
| DL | Dale |
| DL | Distance Learning |
| DL | Deadline |
| DL | Diabolik Lovers (gaming) |
| DL | Digital Library |
| DL | Direct Link |
| DL | Direct Loan |
| DL | Detroit Lakes (Minnesota) |
| DL | Data Link |
| DL | Defensive Line (football) |
| DL | Detroit Lions |
| DL | Design Layout |
| DL | Delta Airlines |
| DL | Distribution List |
| DL | Detroit Lakes, Minnesota |
| DL | Daylight |
| DL | Distributed Learning |
| DL | Down Low |
| DL | Detection Limit |
| DL | Disneyland |
| DL | Darlington (UK postal code) |
| DL | Deadlock |
| DL | Deciliter |
| DL | Don't Lie |
| DL | De Luxe |
| DL | Distinguished Lecturer (various organizations) |
| DL | Demi Lovato (actress/singer) |
| DL | Def Leppard (band) |
| DL | Diffraction Limited |
| DL | Decreto-Lei (decree-law) |
| DL | Dyslexia |
| DL | Dead Link |
| DL | Donegal (Irieland) |
| DL | Dalai Lama |
| DL | General Counsel (DCAA) |
| DL | Devils Lake (North Dakota) |
| DL | Daresbury Laboratory (UK) |
| DL | Direct Line |
| DL | Duckworth-Lewis (mathematical formulation; cricket) |
| DL | Dragon's Lair (video game) |
| DL | Dynamic Load |
| DL | Data Language |
| DL | Dark Lord (gaming) |
| DL | Datalife (backup tape) |
| DL | Dolby Laboratories |
| DL | Dead Load |
| DL | Down Link |
| DL | Data List |
| DL | Dreadlock |
| DL | Deputy Lieutenant (British county official) |
| DL | Design Language |
| DL | D-Limonene |
| DL | Distribution License |
| DL | Delay Line (electronic schematics) |
| DL | Dead Lift (weight lifting) |
| DL | Diaper Lover (fetish) |
| DL | Darklight |
| DL | Diploma di Laurea (Italian: Degree) |
| DL | Diagonal Loading (beamforming) |
| DL | Division Leader |
| DL | Démocratie Libérale (French: liberal democracy) |
| DL | Direct Labor |
| DL | Dark Legacy (game roleplaying MUD) |
| DL | Document List |
| DL | Democratic Left (UK) |
| DL | Decaliter |
| DL | Design Limits |
| DL | District Leader (LDS church) |
| DL | Department of Labour |
| DL | Dark Lotus (band) |
| DL | Den Leader (Boy Scouts of America) |
| DL | Diplôme de Langue (French: Diploma in Language) |
| DL | Depot Level |
| DL | Drum Line |
| DL | Died Laughing |
| DL | Demarcation Line |
| DL | Dexter's Laboratory (cartoon show) |
| DL | Dreadlord (gaming) |
| DL | Discharge Line |
| DL | Defect Level |
| DL | Dorsolumbar |
| DL | Demokratische Linke |
| DL | Delaware-Lackawanna Railroad |
| DL | Document Log |
| DL | Destroyer Leader |
| DL | Dag Locking |
| DL | Dial Line |
| DL | Designated Laboratory |
| DL | Danger List |
| DL | Drum Lifter (industrial tool) |
| DL | Diode Logic |
| DL | Demonstrated Logistician |
| DL | Dimension Lengthwise (envelope format) |
| DL | David Lipscomb University (Nashville, Tennessee) |
| DL | Derogatory Label |
| DL | Deficiency List |
| DL | Dreadlands (Everquest game) |
| DL | Duelist League (game) |
| DL | Dark Lich (game character) |
| DL | Detachment Leader |
| DL | Educational Delay |
| DL | Dissipative Loss |
| DL | Designated Loser (sports) |
| DL | Deficiency Log |
| DL | Disciplinary Leave |
| DL | Deal Load |
| DL | Data Discrepancy List |
| OC | Optical Carrier |
| OC | Orange County (California; New York) |
| OC | Over Clock (computer CPU) |
| OC | Of Course |
| OC | Orange County (TV show) |
| OC | Oklahoma Christian University |
| OC | Ocean City, MD |
| OC | Ocean City |
| OC | Open Carry (firearm possession) |
| OC | Own Character |
| OC | Original Character (fanfiction new, made-up character) |
| OC | OxyContin (prescription drug; aka Oxys) |
| OC | Order Confirmation (purchases) |
| OC | Out of Control |
| OC | Odessa College (Odessa, Texas) |
| OC | Orange Crush |
| OC | Open Circuit (SCUBA and electronics) |
| OC | On Center |
| OC | Online Community |
| OC | Offensive Coordinator (football) |
| OC | Original Content |
| OC | Owl City (band) |
| OC | Organizing Committee (various organizations) |
| OC | Organic Carbon |
| OC | On Camera |
| OC | Office Call |
| OC | Obsessive-Compulsive |
| OC | Oral Contraceptive |
| OC | Off Camera (cinematography) |
| OC | Organized Crime |
| OC | Optical Center |
| OC | Oleoresin Capsicum (active ingredient in pepper spray) |
| OC | Oregon City (Oregon) |
| OC | Oberlin College (Oberlin, Ohio) |
| OC | Overcoat |
| OC | Old Chicago (restaurant) |
| OC | Orospu Cocugu (Turkish: Son of a Bitch) |
| OC | Oregon Coast |
| OC | On Course |
| OC | Order of Canada |
| OC | Oak Cliff (Dallas neighborhood) |
| OC | Communications Division (US Coast Guard) |
| OC | Oliver Cromwell |
| OC | Oral Communication |
| OC | Optional Component (Microsoft Windows) |
| OC | Other Character |
| OC | Officer Commanding |
| OC | Office Coordinator (administrative position) |
| OC | Office of Censorship |
| OC | Operating Cost |
| OC | Oil Cooled (welding) |
| OC | Oversight Committee |
| OC | Office of Communications |
| OC | Overcurrent |
| OC | Operating Company |
| OC | Optical Communications |
| OC | Orientation Course |
| OC | Officer in Command |
| OC | Old Chinese (language of pre 400BC) |
| OC | OpenCup (online tournament) |
| OC | Organochlorine |
| OC | Object Class |
| OC | Open Collector (electronics, transistors) |
| OC | Office of Compliance (US FDA) |
| OC | Owners Corporation (Australia) |
| OC | Officer of the Order of Canada |
| OC | Old Chap (ham radio shorthand) |
| OC | Ottawa-Carleton |
| OC | Optical Channel |
| OC | Operational Control |
| OC | Open Content |
| OC | Operating Characteristic |
| OC | Office of the Commissioner |
| OC | Open Canvas (art program) |
| OC | Office of the Comptroller |
| OC | Oakland City (Indiana College) |
| OC | Operational Capability |
| OC | Operation Center |
| OC | Officer Candidate |
| OC | Operator Console |
| OC | Old Covenant (biblical law) |
| OC | Operant Conditioning (a training technique) |
| OC | Opposing Counsel (legal notation) |
| OC | Operating Committee |
| OC | Outside Corner (measuring in construction) |
| OC | Ondes Courtes (French: shortwave) |
| OC | Orlando Cabrera (baseball player) |
| OC | Obstetric Cholestasis |
| OC | Oxnard College (Oxnard, CA) |
| OC | Over Crowded |
| OC | Operating Carrier |
| OC | Output Compare |
| OC | Observer Controller |
| OC | Open Computing |
| OC | Oceanic Crust |
| OC | Ocean Conservancy |
| OC | Operations Coordinator |
| OC | Operation Class |
| OC | Output Coupler (optics, lasers) |
| OC | Offering Circular |
| OC | Oracle Clinical |
| OC | Oakwood College (Alabama) |
| OC | Oglethorpe County (Georgia) |
| OC | Optical Colonoscopy |
| OC | On-scene Commander |
| OC | Operations Controller |
| OC | Overture Center (performing arts) |
| OC | Output Check |
| OC | Out Calls |
| OC | Organisme Certificateur |
| OC | Out Cast (gaming clan) |
| OC | One Communications, Inc. |
| OC | Occupancy Certificate (residential license) |
| OC | Christian O'Connell (radio personality; UK) |
| OC | Octopus Card (Hong Kong smart payment card) |
| OC | Operating Curve |
| OC | Organisme Conventionné (French: Accredited Body) |
| OC | Operation Channel |
| OC | Omnipotent Carnage (gaming clan) |
| OC | OpenCalphad (computational thermodynamics) |
| OC | Other's Cost |
| OC | Outside Circumference |
| OC | Outdoors Center (Texas A&M) |
| OC | Over-Crossing |
| OC | Ordinary Cadet |
| OC | Orientation Counselor |
| OC | Operation Context |
| OC | Oxygen Cutting |
| OC | Opere Citato (Latin: In the Work Cited) |
| OC | Operator Centralization |
| OC | Organizational Committee of ACC |
| OC | Odin's Court (rock and metal band) |
| OC | Ormiston College |
| OC | Ordres Courants (French: current orders) |
| OC | Oudste Categorie (Dutch) |
| OC | Officer's Cook |
| OC | Otaku Convention (Japanese film festival) |
| OC | Organizadora de Comercio (Spanish; Guatemala) |
| OC | Ordnance Controller |
| OC | Office and Communication Module |
| OC | Outside Contracting/Contractor |
| OC | Order of the Carmelites (religious order) |
| OC | Outage Continuing |
| OC | Outer Chuck |
| OC | Operational Concept/Operating Concept |
| OC | Ochoa & Clary (chemistry team) |
| OC | Open Within Memory Cell |
| RE | Reference |
| RE | Real Estate |
| RE | Regarding |
| RE | Reply |
| RE | Reinforced |
| RE | Right End |
| RE | Release Engineering |
| RE | Rare Earth (chemistry) |
| RE | Hello Again (D-Dial slang) |
| RE | Religious Education |
| RE | Return Exchange |
| RE | Renewable Energy |
| RE | Re-Examination |
| RE | Resident Evil (game) |
| RE | Reunion |
| RE | Risk Exposure |
| RE | Royal Engineers (UK) |
| RE | Requirements Engineering Conference |
| RE | Royal Exchange |
| RE | Research Engineering |
| RE | Roll Eyes |
| RE | reinsurance |
| RE | Round End |
| RE | Reverse Engineering |
| RE | Reunion Island (ISO country code, top level domain) |
| RE | Retained Earnings |
| RE | Reasonable Efforts |
| RE | Regular Expression (formal language theory) |
| RE | Runtime Environment |
| RE | Reggio Emilia (Emilia Romagna, Italy) |
| RE | Routing Engine (Juniper Networks, Inc.) |
| RE | Relative Error |
| RE | Rhenium |
| RE | Rural Electrification (various locations) |
| RE | Rotary Engine |
| RE | Resident Engineer |
| RE | Requirement Engineering |
| RE | Recovery Environment (Microsoft) |
| RE | Revised Estimate |
| RE | Right Engine |
| RE | Responsible Entity (various locations) |
| RE | Reynolds Number (inertia force/viscous force) |
| RE | Runtime Engine |
| RE | Restriction Endonuclease |
| RE | Reproductive Endocrinologist |
| RE | Resource Element |
| RE | Reportable Event |
| RE | Regionalexpreß (German train) |
| RE | Reliability Enhancement |
| RE | Reservoir Engineer |
| RE | Reenlistment Eligibility (code) |
| RE | Recursively Enumerable (formal language theory/recursion theory/computability theory) |
| RE | Radiated Emissions (standard for defense electronics) |
| RE | Radiation Equipment |
| RE | Railroad Easement |
| RE | Receive Element |
| RE | Reduction of Error (statistics) |
| RE | Refusal of Employment |
| RE | Resonant Engineering |
| RE | Retinol Equivalent |
| RE | Renovación Española (Spanish: Spanish Renewal; political movement) |
| RE | Radio Éireann (Irish Radio pre-1966) |
| RE | Remedial Engineering |
| RE | Radio Enclosure |
| RE | Emitter Resistance (transistors) |
| RE | Relationship Episode |
| RE | Radium Emanation |
| RE | Radiation Element |
| RE | Registered Electrologist |
| RE | rodding eye (mechanical services) |
| RE | Recycle Acid |
| RE | Directorate for Readiness |
| RE | Royal Society of Etchers & Engravers |
| RE | RDF/Ethernet |
| RE | US Revenue Cordials or Wines (Scott Catalogue prefix; philately) |
| TS | Top Secret |
| TS | Tropical Storm |
| TS | Thunderstorm |
| TS | Transport Stream |
| TS | Transsexual |
| TS | Timestamp |
| TS | Technical Support |
| TS | Terminal Service |
| TS | Terms of Service |
| TS | Toy Story (movie) |
| TS | Table Saw (woodworking) |
| TS | Tunisia |
| TS | The Sims (computer game) |
| TS | Tri-State |
| TS | Technical Specification |
| TS | The Stuff (movie) |
| TS | Taylor Swift (singer) |
| TS | Test Set |
| TS | Technical Services |
| TS | Cleveland (postcode, United Kingdom) |
| TS | Trabzonspor (Turkey) |
| TS | Times Square |
| TS | Trieste (Friuli Venezia Giulia, Italy) |
| TS | Temperature Sensor |
| TS | Time Slot |
| TS | Twilight Sparkle |
| TS | Teamspeak |
| TS | Top Speed |
| TS | Top Soil |
| TS | Totally Spies (TV show) |
| TS | The Simpsons (TV show) |
| TS | Theological Seminary |
| TS | Twisted Sister (band) |
| TS | Tourette Syndrome |
| TS | Table Shower |
| TS | Township |
| TS | Test Site |
| TS | Transaction Server |
| TS | Total System |
| TS | Traffic Signal |
| TS | Transfer System (various companies) |
| TS | Trading Spaces (TV show) |
| TS | Tony Stewart |
| TS | Training Support |
| TS | Time Sharing |
| TS | Teesside (UK post code) |
| TS | Thomas Stearns (poet T.S. Eliot) |
| TS | Transverse Section |
| TS | Tasmania (Australia) |
| TS | Table Service |
| TS | Thymidylate Synthase |
| TS | Time Switch |
| TS | Total Solution (RWM Data Management Ltd.) |
| TS | Teaspoon |
| TS | Turner Syndrome (XO monosomy in girls) |
| TS | Thermal Systems |
| TS | Training Ship |
| TS | TeleSync |
| TS | Tensile Strength |
| TS | Transportation System (\Siemens) |
| TS | Total Score |
| TS | Temperature Sensitive (cells) |
| TS | Training Specialist |
| TS | Top Spin (game) |
| TS | Translation Services |
| TS | Tupac Shakur |
| TS | Town Square |
| TS | Twin Sister |
| TS | Tenor Saxophone |
| TS | TimeSplitters (video game) |
| TS | Transport Service |
| TS | The Syndicate (online gaming guild) |
| TS | Traffic Shaping |
| TS | Technical School |
| TS | Treatment System |
| TS | Transfer Station (waste, shipping, mining) |
| TS | Terror Squad (band) |
| TS | Tuberous Sclerosis |
| TS | Terror Squad (gaming clan) |
| TS | Thoracic Surgery |
| TS | Trisomy |
| TS | Tiberian Sun (game) |
| TS | Tom Sawyer |
| TS | Technical Solution |
| TS | Temperature Switch |
| TS | The Specialists (gaming, Half-Life) |
| TS | Test Solution |
| TS | Timestamping (IRC) |
| TS | Total Solids (environmental biology) |
| TS | Topic Starter (person who started a forum thread) |
| TS | The Shins (band) |
| TS | Trade Station (investing/trading software) |
| TS | Toisin Sanoen |
| TS | Typescript |
| TS | Tramp Stamp |
| TS | Technical Standard |
| TS | Thermal Subsystem (company) |
| TS | Time Sheet |
| TS | Toxic Substance |
| TS | Trading Spouses (TV show) |
| TS | Trouble Shooter |
| TS | Tabu Search (algorithm) |
| TS | Theological Studies (Journal) |
| TS | Tracking Sensor |
| TS | Treasury Stock |
| TS | Test Specification |
| TS | |
| TS | Technological Singularity |
| TS | Tough Stuff (polite form) |
| TS | Trailing Stop (investing/trading) |
| TS | Test Station |
| TS | Thermal Sensor (computing) |
| TS | Terribly Sad |
| TS | Test Switch |
| TS | Telegraph System |
| TS | Temple Square (Salt Lake City, UT, USA) |
| TS | Text Structure |
| TS | Temporary Structure |
| TS | Target Start |
| TS | Total Strength |
| TS | Transient State (of a reaction or system) |
| TS | Tale Spin (cartoon) |
| TS | Training Squadron |
| TS | Team Shot |
| TS | Transmission Scheme |
| TS | Trypticase Soy |
| TS | Tenure System |
| TS | |
| TS | Target Strength |
| TS | Tentative de Suicide (French: Suicide Attempt) |
| TS | Terasecond (time measurement) |
| TS | Transfer Start (memory controllers) |
| TS | Trunk Side |
| TS | Tamper Switch |
| TS | True Shame |
| TS | Traffic Sensitive |
| TS | Task Support |
| TS | Trusted Solaris |
| TS | Tail Suspension (rat scientific testing) |
| TS | Transit Storage |
| TS | Transmitter Station |
| TS | Tip, Sleeve |
| TS | Timer State |
| TS | Terribly Sexy |
| TS | Tipperary South (Ireland) |
| TS | Twin Stack (decoder) |
| TS | Turbine Ship |
| TS | Timothy Syndrome |
| TS | Taura Syndrome |
| TS | Tennessee Smokies (Minor League baseball team) |
| TS | Time Shack (US Navy) |
| TS | Tethered Satellite |
| TS | Torch Soldering |
| TS | Tandem Server |
| TS | Toilet Stop |
| TS | Tele Soluciones (Guatemala) |
| TS | Townsend's Solitaire (bird species) |
| TS | Transition Season |
| TS | Transitional Strategy |
| TS | Toll Switching |
| TS | Tevynes Sajunga (Homeland Union Party, Lithuania) |
| TS | Tapered Single (roller bearings) |
| TS | Terminating Switch |
| TS | Transit Switch |
| TS | Telemetry Station |
| TS | Tube Settler (wastewater treatment) |
| TS | Trigger Supervisor |
| TS | Treating Source |
| TS | Test Secretary |
| TS | Tunnel Switch |
| TS | Twin Skies (computer game) |
| TS | Trans-Section |
| TS | Tangent to Spiral |
| TS | Thyssen Schachtbau GmbH |
| TS | Triathlonscotland |
| TS | Tanapap, Saipan (US Navy) |
| TS | Tribal Souls (band) |
| TS | Topological Surgery |
| TS | Tagging Spectrometer |
| TS | Tritium Storage |
| TS | TELE-Sputnik (Satellite, Cable TV and Telecommunication magazine, Russia) |
| TS | Thermal Smooth (weather) |
| TS | Tethered Swimming |
| TS | Tackable Surface |
| TS | Thyristor Switch |
| TS | Triumphant Sound (Manhattan Christian College, Manhattan, KS singing group) |
| TS | Thor Shield (G2 Consulting) |
| TS | Tough Save (baseball) |
| TS | Tending Side |
| TS | Tesselated Sheroid |
| TS | Science and Engineering Support Office (NIMA) |
| TS | Thresher-Separator |
| TS | Tidewater Southern Railway Company |
| TS | Test/Type Specification |
| TS | Temple Siege (game) |
| TS | Trembler Switch |
| TS | Trabzon Spor Klübü (Trabzon, Turkey) |
| TS | Tropical Staining (philately) |
| TS | Toogoolawa School (Gold Coast, Australia) |
| TS | Turbosoufflantes (French: Turbofan) |
| TS | Trajectory Synthesis CSCI |
| TS | Times-Shamrock, Inc. (Scranton, PA) |
| TS | Transaction Separator |
| TS | Theil Statistic (software reliability) |
| AM | Amplitude Modulation |
| AM | Ante Meridiem (period between midnight and noon) |
| AM | Away Message (instant messaging) |
| AM | American |
| AM | Area Map (FAA ARTCC mapping of Sector Suites to an Area) |
| AM | American Morning (CNN Morning Show) |
| AM | Action Man (cartoon series) |
| AM | Application Manager |
| AM | Above Mentioned |
| AM | Account Manager |
| AM | Application Management |
| AM | Ave Maria (Latin: Hail Mary) |
| AM | Assistant Manager |
| AM | Air Mass |
| AM | Arranged Marriage |
| AM | American Motors (purchased by Chrysler) |
| AM | Active Matrix |
| AM | Associate Member |
| AM | Assembly Member |
| AM | Animation Master (3d animation software) |
| AM | Accounts Manager |
| AM | Active Mode |
| AM | Alert Message |
| AM | Access Method (Sprint) |
| AM | Alyssa Milano |
| AM | Absent Minded |
| AM | Air Mobile |
| AM | Accounting Management |
| AM | Amen (epigraphy) |
| AM | Address Management (USPS) |
| AM | Asset Management |
| AM | Amos |
| AM | Arctic Monkeys (UK band) |
| AM | Armenia (top-level domain) |
| AM | Aston Martin |
| AM | Agricultural and Mechanical |
| AM | Aviation Management (US Department of the Interior) |
| AM | Analysis Manager |
| AM | Accredited Member |
| AM | Alanis Morissette |
| AM | Alma Mater |
| AM | Air Marshal |
| AM | Achievement Medal |
| AM | Member of the Order of Australia |
| AM | Audit Manager |
| AM | Against Me! (band) |
| AM | Air Medal |
| AM | Airmail |
| AM | Aviation Medicine |
| AM | Air Methods (medical helicopter company) |
| AM | Advanced Manufacturing |
| AM | Auto Map |
| AM | Amazonas (Brazil) |
| AM | Active Monitor |
| AM | Access Module |
| AM | Accelerated Math |
| AM | Applied Mechanics (various organizations) |
| AM | Andi Mack (TV series) |
| AM | Age-Matched (Z-score used in conjunction with DEXA scan reports) |
| AM | Adhesion Molecule |
| AM | Alonzo Mourning (basketball player) |
| AM | Alternate Mode |
| AM | Antrim (Ireland) |
| AM | After Market |
| AM | Adoptive Mother |
| AM | Afore Mentioned |
| AM | Alveolar Macrophages |
| AM | Activity Manager |
| AM | Alpes-Maritimes |
| AM | Après-Midi (French: Afternoon) |
| AM | Alaskan Malamute (dog breed) |
| AM | Americium |
| AM | AeroMexico (IATA Airline Code) |
| AM | Arteriovenous Malformation |
| AM | Aerospace Medicine (US Navy) |
| AM | Acrylamide |
| AM | Anti Mage (gaming) |
| AM | Aseptic Meningitis (illness) |
| AM | Arkansas and Missouri (railroad) |
| AM | Air Ministry |
| AM | Akademia Medyczna (Polish: Academy of Medical Sciences) |
| AM | Arithmetic Mean |
| AM | Attacking Midfielder (soccer position) |
| AM | Agile Methodology |
| AM | Aeronautica Militare (Italian Air Force) |
| AM | Aide Mémoire (French:memorandum) |
| AM | Actinomycosis (skin disease) |
| AM | Automod (defunct GameFAQs feature) |
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