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Word(s) in meaning: chat "global warming" Postal codes: USA: 81657, Canada: T5A 0A7 
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Your abbreviation search returned 106 meanings
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| Category Filters > | All definitions (106) |
Information Technology (13) |
Military & Government (32) |
Science & Medicine (20) |
Organizations, Schools, etc. (18) |
Business & Finance (17) |
Slang, Chat & Pop culture (13) |
| sort results: alphabetical | rank ? | |||
| Rank | Abbr. | Meaning | |
|---|---|---|---|
| ****** | OS | Operating System | |
| ****** | 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 | Ordnance Survey | |
| ****** | 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 | Austrian Airlines (IATA airline code) | |
| ****** | OS | Operational Security | |
| ****** | OS | Old Stuff :-) | |
| ****** | OS | Ocean Springs (Mississippi) | |
| ****** | OS | Oversize | |
| ****** | OS | Oliver Stone (director) | |
| ****** | OS | Osmium | |
| ****** | Os | Orioles (Baltimore baseball team) | |
| ****** | OS | Old Spice (after shave brand) | |
| ***** | OS | Ocean Shores (Washington) | |
| ***** | OS | Out-of-Service | |
| ***** | OS | Overshoot | |
| ***** | OS | Owen Sound (City, Canada) | |
| ***** | 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 | Optical Scanning | |
| ***** | OS | Over Stock | |
| ***** | OS | Olympiska Spelen (Swedish: Olympic Games) | |
| ***** | OS | Oh Shoot (polite form) | |
| ***** | OS | Own Ship | |
| ***** | OS | Old Saxon | |
| ***** | OS | Oberseminar | |
| ***** | OS | Outdoor Skills | |
| ***** | 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 | Oculus Sinister (Latin: Left Eye) | |
| **** | 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) | |
| * | OS | Oregon State (also seen as OSU) | |
| Note: We have 70 other definitions for OS in our Acronym Attic | |||
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