What does SOS stand for?

Coalition to Protect Social Security (EA)

Congress of Scientists on Survival - Inactive

Guilio Sosso - NCIC firearms make code (NCIC)

International Federation of Bloodgivers Organisations (SAUS)

Safety Observation Station

Safety on Sea (SAUS)

Safety on the Streets - Project of National Safety Council

Same Old Shit

Same Old Situation

Same Old Sludge - Slang phrase used to describe television programming

Same Old Stew - Military slang - Bowdlerized version

Same Old Stuff - Reference to the weather

Same Only Softer - Band leader's signal - Slang

Sanity on Sex - Group opposing sex education in schools

Sapphire on Silicon (SAUS)

Satellite Observation System

Satellite Observing System - Marine science

Save Our Schools (EA)

Save Our Security (EA)

Save Our Security Coalition (EA)

Save Our Ship - or Souls - Popular explanation of Morse code letters used as a signal for extreme distress

Save Our Shires - British - An association (DBA)

Save Our Shores (EA)

Save Our Snails - An association

Save Our Sons - Cancer information service - British

Save Our Souls

Save Our Springs

Save Our Strays (EA)

Save our Supplements - British campaign to protect food supplements from European regulation

Save Outdoor Sculpture - Database producer (IID)

Save Outside Sculpture

Scheduled Oil Sampling - Automotive engineering

Schedule Optimization Study (ABAC)

Science of Survival

Scientific Opportunity Syndrome (SAUS)

Scientists for Sakharov, Orlov, and Shcharansky (EA)

Scientists on Survival (SAUS)

Sealift Operating System (SAUS)

Secretary of State

Secular Organizations for Sobriety (EA)

Secure Overlay Service

Seeku - Language code (ETLW)

Self-Observation Scales - Test (TES)

Self-Obtained Smear - Medicine (DMAA)

Self-Opening Sack - Paper bag

Self-Opening-Square (SAUS)

Self Organizing System (SAUS)

Self-Organizing System

Self-shielding Open-arc Stainless (SAUS)

Seminar fuer Orientalische Sprachen - University of Bonn (APS)

Send Out Succor

Senior Officer Service

Senior Officers School (SAUS)

Senior Officer Structure

Senior Opportunities and Services - OEO

Sentinel on Station

Serial Output Special (MCD)

Service Observer School (SAUS)

Service off the Shelf (IAA)

Service of Suit (SAUS)

Service of Supply - Later, ASF - Army

Service on Sight - Computer warranty program offered by Hyundai Electronics

Service Order System - Telecommunications (TEL)

Set of Support (SAUS)

Shakespeare Oxford Society (EA)

Share Operating System - Computer science

Share Our Spectacle(s) (SAUS)

Share Our Strength (EA)

Ship Our Ships Program - Navy (DNAB)

Ships Operational Safety - A publication

Ships Ordnance Summary

Shitty Operating System

Shock-on-Shock

Shop Order Shop (SAA)

Shop Out of Stock (SAA)

Shrink Our Systems (SAUS)

Sick on Shore (SAUS)

Signed off Sick (SAUS)

Signed-Off Sick

Silicon on Sapphire (SAUS)

Silicon-on-Sapphire - Integrated circuit

Silicon-on-Spinel (IAA)

Simulation Optimization Systems Research Laboratory - McMaster University - Canada (RCD)

Simulator Operating System (IAA)

Simultaneous Oral Spelling - Gillingham method - Education

Si Opus Sit - If Needed - Pharmacy

Sisters of Service - Roman Catholic religious order

Slag on a Shingle (SAUS)

Slip on Show - Indicates a woman's slip is showing (DSUE)

Slum on a Shingle - Army breakfast dish - Bowdlerized version

Smoke Obscuring Screen (SAUS)

Sniping, Observation, and Scouting - Course - World War I - Military - British

Society for Occlusal Studies (EA)

Society of Operative Stonemasons - A union - British

Society of Schoolmasters (SAUS)

Society of Scribes (EA)

Society of Separationists (EA)

Society of Shuttlemakers - A union - British

Society of Signalmen (EA)

Society of Singers - Association (EA)

Software Obsolescence Study (SAUS)

Someone over Shoulder - Internet lingo

Someone Special - Internet lingo

Son of Sevenless (SAUS)

Son of Stopgap

Sophisticated Operating System - Apple III microcomputer - Computer science

Sostenuto - Sustained - Music

Sound on Sound (NTCM)

Sound on Sync (IAA)

Source of Supply

Southern Oxidants Study (CDIAC)

Southern Oxidant Study - Marine science

Soviet Oceanographic Surveillance (MCD)

Space Operations Simulator (ACAE)

Space Ordnance Systems, Inc. (MCD)

Spare Operation Support

Spay Our Strays (EARSL)

Special Operational Surcharge (SAUS)

Special Operations Squadron - Air Force

Special Ordered Sets (SAUS)

Special Organizational Services - An association (EA)

Speed of Service - Telecommunications (TEL)

Speed of Sound

SPRINT Operations Shelter - Army

Squadron Officers School - Air Force

Squadron Operational Support - Military (AFIT)

Stabilized Optical Sight

Stabilized Sight (SAUS)

Stamp Out Smog (SAUS)

Stamp Out Stupidity - Student group opposing drug abuse

Stand-alone Operating System (SAUS)

Standards and Open Systems (SAUS)

Stars Organisation for Spastics - British television awards program

Starthrowers - An association (EA)

Start of Sampling (SAUS)

Start of Significance - Computer science (BUR)

Statement of Service - Military

Statement of Supply

Statics of Solids (SAUS)

Station Operating Supervisor (IEEE)

Station Operator Support (ELAL)

Stimulation of Senses (STED)

Stock Order Shipment

Storage Computer - AMEX symbol

Storage Computer Corp. - AMEX symbol (SAG)

Storage-on-Site - Grolier Electronic Publishing, Inc.

Store Overstocked - Inventory

Straightline Optical Service, Inc. - Commercial firm

Strategic Orbital System (AAG)

Strongpoint Obstacle System - Military (VNW)

Struck off Strength - British military (DMA)

Struck of Strength (SAUS)

Structured Operational Semantics (RALS)

Student Operating System (SAUS)

Student Orientations Survey - Student attitudes test

Student Oriented Studies (SAUS)

Student Originated Studies (SAUS)

Student-Originated Studies - National Science Foundation

Studies on Smoking, Inc. - Research center (RCD)

Suboptimal Surgery (MELL)

Suborbital Sequence - NASA

Sum-of-the-Squares

Sum over States - Physics

Supervisor of Shipbuilding - Navy

Supplemental Oxygen System (MCD)

Supplementary Oil System (SAUS)

Supplementary Ophthalmic Service - Medicine

Supporters of Silkwood - Defunct (EA)

Support on Site - Computer science

Support Our Schools (SAUS)

Support Our Soldiers - Network of antiwar-oriented coffee houses located near military bases (EA)

Survey Office System (GIS)

Survivors of Sacrifice - Defunct (EA)

Survivors of Stalking

Survivors of Suicide

Suspend Other Service - Business term

Suspension of Service - Pilots' strike

Sustain Our Schools

Sygate Online Services

Symbolic Operating System - Computer science

Symmetry, Orbitals, and Spectra - Atomic physics

Synchronous Orbit Satellite (AAG)

System of Systems - Military technology (DDF)

System Operational Specification - Military (CAAL)

Systems Optimization Services (SAUS)

Serial Output Special (NAKS)

Si Opus Sit - If Necessary - Latin (WDAA)

Source of Supply (NAKS)

Stabilized Optical Sight (NAKS)