| Meaning | Category |
| Sales Tax Cases | Community->Law |
| Sardine Transport Company | Business->Firms |
| Satellite Television Corporation | Business->Firms |
| Satellite Test Center | Governmental->NASA |
| Saturn Tuners Club | Miscellaneous->Hobbies |
| Satyam Technology Centre | Business->Firms |
| Saudi Telecom Company | Business->Firms |
| Science Technology And Customer | Business->General |
| Science and Technology Corporation | Business->Firms |
| Sensitivity Time Control | Academic & Science->Electronics |
| Service Telephone Company | Business->Firms |
| Set Carry Flag | Computing->Assembly |
| Sexy Time Crew | Community->Music |
| Shoot The Chick | Community->Law |
| Shoot The Chinks | Governmental->Military |
| Shoot The Commie | Governmental->Military |
| Short Term Care | Community Medical->Hospitals |
| Short Term Contract | Governmental->US Government |
| Silicon Trigger Card | Computing->Hardware |
| Software Technology Center | Governmental->Military Computing->Software Governmental->US Government |
| Sound Transfer Class | Community->Media |
| Sound Transmission Coefficient | Academic & Science->Electronics |
| Soviet Tank Crusade | Governmental->Military |
| Spacecraft Test Conductor | Governmental->NASA |
| Spare Tire Carrier | Governmental->Military |
| St Cloud, Minnesota USA | Regional->Airport Codes |
| St Louis Cardinals | Miscellaneous->NFL Teams |
| St. Theresas College | Academic & Science->Universities |
| Stability And Traction Control | Governmental->Transportation |
| Standard Template Construction | Computing->General |
| Standard Test Conditions | Computing->Software |
| Standard Test Configuration | Governmental->NASA |
| Standard Triumph Company | Business->Firms |
| Start To Corpse | Miscellaneous->Funnies |
| State Trading Corporation of India | Business->Firms |
| Steps To Christ | Community->Religion |
| Stewart Information Services Corporation | Business->NYSE Symbols |
| Street Truck Customs | Governmental->Transportation |
| Student Technology Center | Academic & Science->Universities |
| Student Technology Consultant | Business->Positions |
| Student Text Collection | Academic & Science->Universities |
| Subject To Classification | Governmental->Military |
| Superior Total Commitment | Business->General |
| Supplemental Type Certificate | Governmental->Transportation |
| Swank Technical Communications | Business->Firms |
| System Time Clock | Computing->General |
| Systems Test Complex | Governmental->NASA |
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