| Acronym | Definition |
|---|
| COS➣Cost Of Sales |
| COS➣Class Of Service |
| COS➣Collection of Style (fashion line) |
| COS➣Colorado Springs (Amtrak station code; Colorado Springs, CO) |
| COS➣Chief of Staff |
| COS➣Chamber of Secrets (book by J.K. Rowling) |
| COS➣Commercial off the Shelf |
| COS➣Cosine (mathematics) |
| COS➣Conditions of Success |
| COS➣Conditions of Satisfaction |
| COS➣Church of Scientology |
| COS➣Council of Students (various organizations) |
| COS➣Consul (in ancient Rome) |
| COS➣College of Security (Star Trek gaming) |
| COS➣Children of Sin (song) |
| COS➣Convention of States (Houston, TX) |
| COS➣Charity Organization Society |
| COS➣Cosinus |
| COS➣Cosmetology |
| COS➣Change Of Status |
| COS➣Comite des Oeuvres Sociales (French: Committee of Social Works) |
| COS➣Chance of Success (Oil and Gas) |
| COS➣College of the Siskiyous (California) |
| COS➣Chicks on Speed (band) |
| COS➣Change of State |
| COS➣Certificate of Sponsorship (UK) |
| COS➣Committee on Sustainability (various locations) |
| COS➣Controller of Stores (Indian railways) |
| COS➣Certificate of Status (various locations) |
| COS➣City of Saskatoon (Canada) |
| COS➣Circle of Swords (gaming guild) |
| COS➣Collège Ostéopathique Sutherland (French osteopathic college) |
| COS➣Change Of Subject |
| COS➣Contingency Operating Site (Iraq) |
| COS➣Carnival of Space (blogging) |
| COS➣Coefficient d'Occupation des Sols (French: Coefficient of Land Use) |
| COS➣Conditions of Service |
| COS➣Continued Operational Safety (aviation) |
| COS➣Church Of Satan |
| COS➣Credit Ombudsman Service (dispute resolution; Australia) |
| COS➣Crypto Operating System |
| COS➣Cosine |
| COS➣Configuration Object Set |
| COS➣Corba Object Services |
| COS➣Communications System |
| COS➣Control System |
| COS➣Common Object Services |
| COS➣Central Offices |
| COS➣Common Operations Services |
| COS➣Cassette Operating System |
| COS➣Custom Operating System |
| COS➣Corporation of Open Systems |
| COS➣Commercial Operating System |
| COS➣Clip on Socket |
| COS➣Church of Scotland |
| COS➣Conservation Officer Service (Canada) |
| COS➣Cosmic Origins Spectrograph |
| COS➣Cost of Service |
| COS➣Cooperation for Open Systems (Internet) |
| COS➣Centre d'Orientation Scolaire (French: School Counseling Center) |
| COS➣Commandement des Opérations Spéciales (French: Special Operations Command) |
| COS➣Conspiracy of Silence (gaming clan) |
| COS➣Certificate Of Service |
| COS➣Carbonyl Sulphide |
| COS➣Cone of Silence (Get Smart; 1960s TV series) |
| COS➣Code of Silence |
| COS➣Canadian Ophthalmological Society |
| COS➣Center for Operations Support |
| COS➣Corporation for Open Systems |
| COS➣Certificate of Suitability (European Directorate for the Quality of Medicines Agency; Council of Europe; France) |
| COS➣Continuity of Service |
| COS➣Change Of Station |
| COS➣Card Operating System |
| COS➣Corps Support |
| COS➣Chief of Station (CIA) |
| COS➣Compulsory Open Space (construction regulation; various locations) |
| COS➣Chip Operating System |
| COS➣Compatible Operating System |
| COS➣Console Operating System (NASA) |
| COS➣Chimie Organique de Synthèse (French: Synthetic Organic Chemistry) |
| COS➣Close of Service (Peace Corps) |
| COS➣Chief of General Staff (Israel) |
| COS➣Common Operating System |
| COS➣Center for Okinawan Studies (University of Hawaii at Manoa) |
| COS➣Certified Occupancy Specialist (housing industry) |
| COS➣Community Outreach Service (various locations) |
| COS➣Critical Occupational Specialty (US DoD) |
| COS➣Chicago Ornithological Society (Chicago, IL) |
| COS➣Cloak of Shadows (World of Warcraft, gaming) |
| COS➣Centre for Oxfordshire Studies (UK) |
| COS➣Cray Operating System |
| COS➣Club Olympique de Sartrouville (French martial arts club) |
| COS➣Combinatorial Object Server |
| COS➣Colectivo de Organizaciones Sociales (Spanish, Guatemala) |
| COS➣Client Operating System |
| COS➣Career Opportunity System |
| COS➣Connection-Oriented Service |
| COS➣Categories of Service (Medicaid) |
| COS➣Continuity of Supply |
| COS➣Culling of Stratholme (World of Warcraft; gaming) |
| COS➣Caress of Steel (Rush album) |
| COS➣Church Of the Savior |
| COS➣Communications Segment |
| COS➣Contrat d'Objectifs Scolaires (French: Educational Objectives Contract) |
| COS➣Columbia Online Style |
| COS➣China Oilfield Services Ltd |
| COS➣Chip on Submount |
| COS➣Cast-On Strap (battery manufacturing) |
| COS➣Carrier Operated Squelch (two-way radio) |
| COS➣Central Operating System (X-Files) |
| COS➣Common Object Service |
| COS➣CORBA Service |
| COS➣Change Over Switch |
| COS➣Combat Operations Squadron |
| COS➣City of Sails (Barbershop Chorus, Auckland, New Zealand) |
| COS➣Chief of Safety |
| COS➣Conservative Opportunity Society |
| COS➣Chief of Supply |
| COS➣Client Online Services (various businesses) |
| COS➣Cohesive End Site (bacteriophages) |
| COS➣Cadet Officer School |
| COS➣Cash On Shipment |
| COS➣Canadian Oncology Society |
| COS➣Committee on Specifications (AISI) |
| COS➣Coronary Obstructive Syndrome |
| COS➣Complete Orthonormal System |
| COS➣Colorado Springs, CO, USA - Colorado Springs Municipal (Airport Code) |
| COS➣Customer of Size (overweight passenger requiring two economy-class airline seats) |
| COS➣Code Operated Switch |
| COS➣Capital Outlay Support |
| COS➣Come On Spring |
| COS➣Company Orderly Sergeant |
| COS➣Cult of Slaanesh (gaming, Warhammer) |
| COS➣Corona Oxide Semiconductor |
| COS➣Check on-Site |
| COS➣Chiefs of Service (hospitals) |
| COS➣Campus Outreach Services (St. Davids, PA) |
| COS➣Chamber Orchestra of the Springs (Colorado Springs, CO) |
| COS➣Condition of Supply (aerospace) |
| COS➣Canadian Organic Standard |
| COS➣Cell Output Switch |
| COS➣Carry-On Oxygen System (NASA) |
| COS➣Coalition for Orchid Species |
| COS➣Current Operations Section |
| COS➣Caked on Stripes (podcast) |
| COS➣Civilian Occupational Specialty |
| COS➣Casualty of Sound (Maniacal Plan music CD) |
| COS➣Computer On Silicon |
| COS➣Customer Order System |
| COS➣Call Originate Status |
| COS➣Co-Orbiting Satellite (NASA) |
| COS➣Convergent Operating System (Mariposa Technology) |
| COS➣Chosen of Solclaim (gaming clan) |
| COS➣Critical Operational Specialties |
| COS➣Chemical Operation Specialist |
| COS➣Change of Subscriber |
| COS➣Care Outreach Specialist (social work) |
| COS➣Citizens for Open Space (various locations) |
| COS➣Conference and Office Services |
| COS➣Component Oversight |
| COS➣CO2 Removal Service |
| COS➣Center For Obesity Surgery |
| COS➣Customer's Own Stock (FedEx Kinko's) |
| COS➣Client Operating Server |
| COS➣Community and Organizational Services |
cos - lettuce with long dark-green leaves in a loosely packed elongated head