Definitions

Abbreviation

• deep-sky object

Acronym

• Distinguished Service Order (British military decoration for distinguished service in action)
• Dynamic Shared Object
• Days Sales Outstanding
• Defence and Security Organisation (UK)
• Detroit Symphony Orchestra
• Dallas Symphony Orchestra
• Decision Support Objects
• Device Software Optimization
• Defense Sciences Office (DARPA)
• Digital Storage Oscilloscope
• Deathspell Omega (band)
• Designated School Official (US Department of Homeland Security)
• Dzwiekowe Systemy Ostrzegawcze (Polish: Sound Warning System)
• Diablo Swing Orchestra (Swedish band)
• Dienst Stedelijke Ontwikkeling (Dutch: Department of Urban Development)
• Deutsches Symphonie-Orchester (German: German Symphony Orchestra)
• Deutschen Stiftung Organtransplantation (German: German Foundation for Organ Transplantation)
• Dental Support Organization
• Dubai Silicon Oasis (Authority; planned community)
• Data Source Object
• Dynamic Soundstage Organizer
• Dual Small Outline Package
• Decision Support Object
• Direct Shipping Ore (bulk economic minerals)
• Defense Spectrum Organization (US DoD)
• Distribution System Operator (electrical production)
• Democratic Services Officer
• Drug Safety Officer (various companies)
• Deep Sky Object
• Division Spezielle Operationen (gaming clan)
• Deep Sky Object (astronomy)
• Departmental Security Officer (Canada)
• Development Services Office (various locations)
• District Supply Office (various organizations)
• De Standaard Online (Belgian newspaper)
• Disability Service Office (various organizations)
• Domestic Support Obligation (divorce law)
• Daily Sales Outstanding
• Distributed Shared Object
• Defensive Systems Officer (US DoD)
• District Staff Officer
• Delaware Symphony Orchestra
• Domestic Support Operation (US DoD)
• Digital Switch Over
• Deinstitutionalization of Status Offenders
• District Service Office (various locations)
• Distributed System Online (IEEE)
• Drunk Sex Orgy
• Delta Services Organisation (France)
• Data Security Officer
• Dungeon Sea Online (role-playing game)
• Defensive Systems Operator
• Detailed Supplementary Objective
• Defense Science Organization
• Distributed Server Option
• Darkstar Orchestra
• Designated Senior Official
• Defense Subsistence Office
• Delta Special Ops (gaming clan)
• Domestic Special Order
• Defense Spectrum Office
• Debt Setoff (various locations)
• Didier Soenen Organisation (French cycling organization)
• District Security Office (US Navy)
• Dekalb Symphony Orchestra (Tucker, Georgia)
• Disaster Safety Officer
• Dogues Sud Ouest (French: South West Mastiffs)
• DMDC Support Office
• Dear Significant Other
• Director of Site Operations (FEMA)
• Dobbertin Surface Orbiter
• Division of Security Operations (Office of Research Services; US NIH)
• Development System Office
• Detailed Secondary Objective
• Data Set Optimizer
• Dynamic Sound-Stage Organiser
• Dam Safety Officer (USACE)
• Division Security Officer
• Database for Solar Observatories (Naples, Italy)
• Detailed Science/Supplementary Objective
• Defense Systems Operations (US government)
• Delayed Service Order
• Dream Space Organizing (Canada)
• Disulphide Oil
• Discrete Stochastic Optimization
• Discovery System Online
• Dover Symphony Orchestra (Dover, DE)
• Dulwich Symphony Orchestra (UK)
• Denora Southern Railroad
• Deputy Supply Officer (Royal Australian Navy)
• Director of Staff Office
• Distance Spectrum Optimized
• Digital Sampling Oscillator
• Desktop Services Organization
• Dropsonde Systems Operator (USAF Hurricane Hunter aircrew meteorological member)
• DEERS (Defense Enrollment Eligibility Reporting System) Support Office (US DoD)
• Double Socket Outlet (unswitched)