| Subject | English | Thesaurus |
| abbr., scottish | Air Force's Co-ordinating Office for Logistics Research | AFCOLR (USAF) |
| tech., abbr. | American Steel Wire Co's gage | ASW ga |
| st.exch., abbr. | Banco de Galicia y Buenos Aires, S. A. options | QYL |
| gen. | C S-S Co | Cunard Steam-Ship Company (обслуживает линии между Великобританией и Северной Америкой) |
| abbr., auto. | CAR/S SE 1 | car speed sensor 1 |
| abbr., el. | CD-S | compact disc-single |
| abbr. | cd-s | candle-second |
| abbr., mil., commer. | Chairman's Program Assessment | CPA (Joint Chiefs of Staff) |
| mil., abbr. | Chairman's Program Assessment | CPA |
| abbr., mil., commer. | Chairman's Program Recommendation | CPR |
| mil., abbr. | Chairman's Program Recommendations | CPR |
| gen. | Chesterton's Fence | Chesterton's Fence is a principle that says change should not be made until the reasoning behind the current state of affairs is understood. It says the rash move, upon coming across a fence, would be to tear it down without understanding why it was put up. (thoughtbot.com A.Rezvov) |
| abbr., USA | Children’s Health Insurance Program | CHIP (a US federal government program Val_Ships) |
| abbr., busin. | China Nonferrous Metal Industry's Foreign Engineering and Construction Co. | NFC (Kovrigin) |
| O&G | co.op.s.s. | company-operated service station |
| abbr., oil | CO&S | clean out and shoot |
| railw., abbr. | E C S T Container Services and Trading, GmBH | NABU |
| abbr., astronaut. | Federal Special Program for the Development of Russia’s Cosmodromes | DRC (semfromshire) |
| univer., abbr. | Governor's Honors Program | GHP |
| NGO, abbr. | Holt International Children's Services | HICS |
| st.exch., abbr. | Investor's Diversified Services | IDS |
| relig., abbr. | Jewish Children's Regional Services | JCRS |
| humor., abbr. | Junior Boy's Own | JBO |
| univer., abbr. | MIT Women's Technology Program | WTP |
| mil., abbr. | Naval Junior Reserve Officer's Training Corps | NJROTC |
| NGO, abbr. | Office of Children's Ombudsman | OCO |
| busin., abbr. | Other People's Programs | OPP |
| univer., abbr. | President's Undergraduate Fellowship Program | PUF |
| abbr., IT | Professional Developer's Program | PDP |
| abbr., scottish | Program Manager's Assistance Group | PMAG (USA) |
| mil., abbr. | Program Manager's Guidance Memorandum | PMGM |
| abbr., mil., WMD | Program Manager's Office | PMO |
| mil., abbr. | Program Manager's Recommended Program | PMRP |
| abbr., scottish | Programme Manager's Course | PMC |
| abbr., microel. | R-S latch | R-S flip-flop |
| abbr., microel. | S & H | sample-and-hold |
| abbr., proj.manag. | S -HTTP | Secure Hyper text Transfer Protocol |
| abbr., proj.manag. | S -HTTP | Secure HTTP |
| abbr., proj.manag. | S -HTTP | Secure Hypertext Transfer Protocol |
| abbr., el. | S-HTTP | secure hypertext transfer protocol |
| Nasdaq, abbr. | S O S Staffing Services, Inc. | SOSS |
| tradem., abbr. | S S Management Advisory Services | SSMAS |
| abbr., O&G | Saipem Energy Services S.p.A. | SES (MichaelBurov) |
| abbr., commun. | S-ALOHA | slotted ALOHA |
| humor., abbr. | Satan's Accounting Program | SAP |
| abbr., merch.nav. | S/B | Seaman's Book (Ying) |
| abbr., typogr. | s.cap. | small capital |
| clin.trial. | s/co | signal/cutoff (iwona) |
| abbr., energ.ind. | S-CO2 | supercritical CO2 power cycle (MichaelBurov) |
| abbr., radio | S/CO | signal/cutoff (Vadim Rouminsky) |
| abbr., energ.ind. | S-CO2 | supercritical CO2 (MichaelBurov) |
| abbr., energ.ind. | S-CO2 | supercritical carbon dioxide power cycle (MichaelBurov) |
| immunol. | S/Co ratio | signal-to-cutoff ratio (iwona) |
| abbr., microel. | S-H | sample-and-hold |
| IT, file.ext. | S-HTTP | Secure Hypertext Transfer Protocol |
| abbr., telecom. | S-HTTP | secure HTTP |
| abbr. | S-HTTP | Secure HTTP (IETF) |
| abbr. | S-HTTP | Secure HyperText Transfer Protocol (HTTP) |
| abbr., mil. | S-HTTP | Secure Hyper Text Transfer Protocol |
| tech. | S-HTTP | security hypertext transfer protocol |
| tradem., abbr. | Smith's Net Services | SNS |
| ed., abbr. | South's Traveling Educational Program | STEP |
| abbr., microel. | S-pit | shallow pit |
| abbr. | S/S Co. | Steamship company (Vosoni) |
| abbr., el. | S/SE | superconductor/semiconductor (heterojunction) |
| ed., abbr. | Teacher's Grading Program | TGP |
| softw., abbr. | Tom's Simple Chess Program | TSCP |
| railw., abbr. | U S A Waste Services, Incorporated | USWX |
| ed., abbr. | U. S. Department of Health and Human Services | HHS |
| geol., abbr. | U. S. Geological Survey Volcano Hazards Program | VHP |
| Nasdaq, abbr. | U S Industrial Services, Inc. | USIS |
| abbr. | U.S. area phone code Canada/Services | 600 |
| abbr. | U.S. area phone code Directory Services | 411 |
| abbr. | U.S. area phone code Emergency Services | 911 |
| abbr. | U.S. area phone code Government Emergency Telecom Service | 710 |
| abbr. | U.S. area phone code Repair Service | 611 |
| abbr. | U.S. area phone code Service access code | 200 |
| mil., abbr. | U.S. Joint Tactical Communications Program | TRI-TAC |
| law, abbr. | Vesey Junior's Chancery Reports | Ves.Jr. |
| sport., abbr. | Warren Junior Women's League | WJWL |
| ed., abbr. | Washington County Children's Program | WCCP |
| softw., abbr. | Web Services Developer's Kit | WSDK |
| abbr. | Women's Breast and Cervical Cancer Health Program | WBCCHP (AMlingua) |
| busin., abbr. | Women's Business Development Program | WBDP |
| USA | Women's Federal Procurement Program | WFPP |
| physiol., abbr. | Women's Intensive Outpatient Program | WIOP |
| sport., abbr. | Women's Junior Olympic Compulsory | WJO |
| law, abbr. | Women's Law and Public Policy Fellowship Program | WLPPFP |
| physiol., abbr. | Women's Preventive Health Program | WPHP |
| physiol., abbr. | Women's Reproductive Health Program | WRHP |
| abbr., mil., BrE | Women's Services | WS |
| USA | Women's Small Business Program | WSBP |
| NGO, abbr. | Wood County Children's Services Association | WCCSA |
| sport., abbr. | World Junior Women's Championship | WJWC |
| abbr., commun., tel. | Zs0 | zero sidetone impedance |
