| CODE | ABBREVIATION |
| SDS | Sales and Distribution Systems / Switched Data Service / Synchronous Data Set |
| SDSAF | Switched Digital Services Applications Forum |
| SDSC | San Diego Supercomputer Center / Synchronous Data Set Controller |
| SDSE | Shadowed Directory Service area specific Entry |
| SDSF | System (Spool) Display and Search Facility |
| SDSI | Simple Distributed Security Infrastructure |
| SDSL | Single-line Digital Subscriber Line / Symmetric Digital Subscriber Loop |
| SDTV | Standard-Definition Television |
| SDU | Service Data Unit |
| SDX | Storage Data Acceleration(Xceleration) |
| SE | Session Entity / Society Elite / Sweden / Switching Element |
| SEA | Self Extracting Archive (usually as .SEA) / Society for Electronic Access / System Enhancement Associates |
| SEAL | Screening External Access Link / Secure Electronic Authorization Laboratory / Secure Electronic Authorization Laboratory / Simple and Efficent Adaption Layer |
| SEAS | Signaling Engineering and Administration System |
| SEC | Second (usually as sec) / Single Edge Contact |
| SECAM | SEquential And Memory / Sequential Couleur Avec Memoire / Systeme En Couleur Avec Memoire |
| SECB | Severely Errored Cell Block |
| SEDA | Staff and Education Development Association |
| SEE | Systems Equipment Engineering |
| SEF | Severely Errored Framing / |
| SEF/AIS | Severely Errored Framing Alarm Indication Signal |
| SEG | Semiconductor Engineering Organization |
| SEH | Structured Exception Handling |
| SEI | Software Engineering Institute |
| SEIS | Software Engineering & Information Systems (research group) |
| SEK | Swedish Electrical Commission |
| SEL | Selector |
| SELV | Safety Extra-Low Voltage (circuit) |
| SEM | System Error Message |
| SEP | Someone Else's Problem |
| SEPP | Secure Electronic Payment Protocol (specification) |
| SEQUEL | Structured English QUEry Language |
| SERC | Science and Engineering Research Council |
| SES | Service Evaluation System |
| SESFE | Severely Errored Second Far End |
| SESP | Severely Errored Second Path |
| SET | Secure Electronic Transaction(s) (specification) |
| SETE | Smiling Ear To Ear |
| SETS | Selected Executable Test Suite |
| SF | Science Fiction / Sign Flag / Single Frequency / Summarization Function / Supervision-control Frequency / Switching Fabric |
| SFA | Sales Force Automation |
| SFAIAA | So Far As I Am Aware |
| SFD | Simple Formattable Document |
| SFE | Secure Front End |
| SFI | Single Frequency Interface / Society for the Freedom of Information |
| SFLA | Stupid Four Letter Acronym |
| SFMC | Satellite Facility Management Center |
| SFQL | Structured Full-text Query Language |
| SFS | Suomen Standardisoimisliitto (Standards Association of Finland) |
| SFT | System Fault Tolerance |
| SFU | Store and Forward Unit |
| SG | Signal Ground / Study Group / Supergroup |
| SGA | Sysops Guild Association |
| SGAUA | Scitex Graphic Arts Users Association |
| SGFS | Special Group on Functional Standardization |
| SGI | Silicon Graphics Inc. |
| SGISP | Special Group on International Standardized Profiles |
| SGML | Standard Generalized Markup Language / Standard Generic Markup Languange |
| SGML-B | Standard Generalized Markup Language - Binary |
| SGMLB | Standard Generalized Markup Language Binary |
| SGMP | Simple Gateway Management Protocol / Simple Gateway Monitoring Protocol |
| SGND | Signal Ground |
| SGRAM | Synchronous Graphics Random Access Memory |
| SH | Shared |
| SHA | Secure Hash Algorithm / Swedish Hackers Association |
| SHDSL | Single-Line - High-bit-rate Digital Subscriber Line |
| S-HDSL | Single-Line - High-bit-rate Digital Subscriber Line |
| SHEFC | Scottish Higher Education Funding Council |
| SHERIFF | Statistical Heuristic Engine to Reliably and Intelligently Fight Fraud |
| SHF | Super High Frequency |
| SHIBNI | SHIpped But Not Invoiced |
| SHID | Slaps Head In Disgust |
| SHIT | See here - you're gonna get kicked :) |
| SHM | Shi* Happens Mate |
| SHS | Secret Hackers Society |
| SHT | Short Holding Time |
| SHTML | Super HyperText Markup Language |
| S-HTTP | Secure HyperText Transfer Protocol |
| SHV | Standard High Volume |
| SI | Shift In (ASCII) / Source Index / SPDU Identifier / Status Indicator / Step Index |
| SIA | Semiconductor Industry Association / Stable Implementation Agreements |
| SIC | Serial Interface Card / Silicon Integrated Circuit / Standard Industrial Classification |
| SICS | Sitting in Chair Snickering / Service Implementation Conformance Statement |
| SID | Satanic Incarnate of Doom / Security IDentifier / Signaling Identifier / Source Identifier / Sudden Ionospheric Disturbance / Switch Interface Device / System IDentification |
| SIDF | System Independent Data Format |
| SIDH | System Identification Home |
| SIF | Standard Input Format |
| SIG | Special Interest Group |
| SIGCAT | Special Interest Group on CD-Rom Applications and Technology |
| SIGWEB | Special Interest Group on the World Wide Web |
| SIIN | Shi* if I Know |
| SIL | Semiconductor Injection Laser |
| SILS | Standard for Interoperable LAN Security |
| SIM | Service Industry Marketing / Subscriber Identity Module |
| SIMA | Strategic (Support?) Initiative for Multimedia Application |
| SIMCA | sitting in my chair amused |
| SIMD | Single Instruction Multiple Data |
| SIMM | Single Inline Memory Module |
| SIMP | Satellite Information Message Protocol |
| SINA | Static Integrated Network Access |
| SIO | Security Information Object |
| SIP | Single In-line Package / SMDS Interface Protocol |
| SIPL | State In Programming Languages |
| SIPP | Single In-line Pin Package / Single Internet Protocol Plus |
| SIPRNET | Secret IP Router Network (usually as SIPRnet) |
| SIR | Speaker Independent Recognition |
| SIRDS | Single Image Random Dot Stereograms |
| SIS | Structured Information Store / Standardisering-skommissionen In Sverige (Swedish Standards Committee) |
| SIT | Special Information Tones |
| SITA | Society for International Telecommunications for Aeronautics |
| SITD | Still in the dark |
| SIVR | Speaker Independent Voice Recognition |
| SJG | Steve Jackson Games |
| SJWG | Security Joint Working Group |
| SK | Sofdox Krackers |
| SKIP | Simple Key management for Internet Protocols |
| SKISM | Smart Kids Into Sick Methods |
| SKU | Stock Keeping Unit |
| SL | Section Leader / Session Layer |
| SLA | Service Level Agreement |
| SLAC | Stanford Linear Accelerator Laboratory |
| sLag | So Lovely a Guy |
| SLAP | Sounds Like A Plan |
| SLC | Semiconductor Laser Configurations / Service Level Contract / Software License Configurator / Subscriber Line Charges / Subscriber Loop Carrier |
| SLD | Second Level Domain |
| SLE | Screen List Editing / Screening Line Editor |
| SLED | Single Large Expensive Disk |
| SLF | Smurf Liberation Front |
| SLI | Southern Lights Incorporated (usually as SLi) |
| SLIC | Subscriber Line Interface Card / Subscriber Line Interface Circuit |
| SLIM | Subscriber Line Interface Module |
| SLIP | Serial Line Interface Protocol / Serial Line Internet Protocol |
| SLMR | Silly Little Mail Reader |
| SLR | Service Level Reporter / Single Lens Reflex (camera) |
| SLS | Sequential Logic Systems / Storage Library System |
| SLT | System Load Tape |
| SLU | Secondary Logical Unit / Serial Line Unit |
| SM | Snail Mail / Standby Monitor / Switching Module |
| SMA | Sub-Miniature Assembly |
| SMAE | Systems Management Application Entity |
| SMAP | Systems Management Application Process |
| SMAPI | Simple Messaging Application Programming Interface |
| SMART | Source Migration And Reporting Tool |
| SMAS | Supplementary MAin Store / Switched Maintenance Access System |
| SMASE | Systems Management Application Service Element |
| SMASF | Switched Maintenance Access System Frame |
| SMASPU | Switched Maintenance Access System Power Unit |
| SMB | Server Message Block (protocol) |
| SMC | Secretariat Management Committee / Sleep Mode Connection / Standard Microsystems Corporation |
| SMCC | Sun Microsystems Computer Company |
| SMD | Storage Module Device |
| SMDF | Subscriber Main Distributing Frame |
| SMDI | Simplified Message Desk Interface / Storage Module Disk Interconnect / Subscriber Message Desk Interface |
| SMDL | Standard Music Description Language |
| SMDR | Station Message Detailed(ing) Recording |
| SMDS | Switched Multimegabit Data Service / Switched Multi-Megabit Data Service / Switched Multi-Megabit Data Services |
| SME | Society of Manufacturing Engineers |
| SMF | Single Mode Fiber |
| SMFA | Systems Management Functional Area |
| SMG | Super Master Group |
| SMI | Structure of Management Information / System Management Interrupt |
| SMIB | System Management Information Base |
| SMIME | Secure Multimedia Internet Mail Extension / Secure Multipurpose Internet Mail Extensions |
| SMIS | Specific Management Information Service |
| SMISE | Specific Management Information Service Element |
| SMK | Shared Management Knowledge |
| SMM | System Management Mode |
| SMO | Serious Mode On / System Management Overview |
| SMOff | Serious Mode Off |
| SMOP | Simply a Matter Of Programming / Small Matter Of Programming |
| SMP | Service Message Blocks / Symetric MultiProcessing / Session Management Protocol / Standby Monitor Present / Symmetrical Multiprocessing |
| SMPDU | Service Message Protocol Data Unit / System Management Protocol Data Unit |
| SMPTE | Society of Motion Picture and Television Engineers |
| SMRAM | System Management Random Access Memory |
| SMRP | (AppleTalk) Simple Multicast Routing Protocol |
| SMRT | Signal Message Rate Timing |
| SMS | Self-Maintenance Services / Service Management System / Service Management Systems / Short Message Service / Station Management System / Storage Management Services / Storage Management Subsystem / Systems Management Server |
| SMSA | Standard Metropolitan Statistical Area |
| SMSP | Storage Management Services Protocol / Simple Mail Transfer Protocol / Simple Mail Transport Protocol |
| SMU | Strategic Marketing Unit |
| SN | Sequence Number |
| SNA | Systems Network Architecture |
| SNACP | SubNetwork Access Protocol (usually as SNAcP) |
| SNADS | Systems Network Architecture Distribution Services |
| SNAFU | Situation Normal All "fixed" Up or Fouled UP or Fu**ed Up |
| SNAP | Sub-Network Access Protocol |
| SNARE | SubNetwork Address Resolution Entity |
| SNCP | Single Node Control Point |
| SNDCF | SubNetwork Dependent Convergence Facility / SubNetwork Dependent Convergen |
| SNDCP | SubNetwork Dependent Convergence Protocol |
| SNERT | Snot-Nosed Egotistical Rude Teenager |
| SNET | Southern New England Telephone |
| SNG | Secured Network Gateway |
| SNI | Siemens Nixdorf Informationsysteme / Subscriber Network Interface |
| SNICF | SubNetwork Independent Convergence Facility |
| SNICP | SubNetwork Independent Convergence Protocol |
| SNMP | Simple Network Management Protocol |
| SNP | Sequence Number Protection |
| SNPA | SubNetwork Point of Attachment |
| SNPC | Software New Products Committee |
| SNR | Signal to Noise Radio |
| SNRM | Set Normal Response Mode |
| SNS | Satellite Navigation System |
| SO | Shift Out (ASCII) / Significant Other aka Spouse boyfriend/girlfriend) / System Option |
| SOA | Safe Operating Area |
| SOAC | Service Order Analysis Control |
| SOB | Do you really need *me* to explain this one? Well Son of a Female Dog |
| SOC | Service Oversight Center / Systems and Option Catalog |
| SOCC | Standard Optical Cable Code |
| SOCCA | Specification Of Coordinated and Cooperative Activities |
| SODIMM | Small Outline Dual Inline Memory Module |
| SO-DIMM | Small Outline Dual Inline Memory Module |
| SOE | Silly/Stupid Operator Error / Standard Operating Environment / Standards of Excellence |
| SOF | Save our Freeware |
| SOGITS | Senior Officials' Group for Information Technology Standardization |
| SOGT | Senior Officials' Group for Telecommunications |
| SOH | Section OverHead / Service Order History / Start Of Header / Start Of Heading (ASCII) |
| SOHO | Small Office Home Office |
| SO-J | Small Outline J-lead |
| SOL | Sh*t Outta Luck / Sons Of Liberty. |
| SOM | Start Of Message |
| SONAR | Service Order Negotiation And Retrieval |
| SONDS | Small Office Network Data System |
| SONET | Snychronous Optical NETwork |
| SOP | Standard Operating Procedure / Sum Of the Pieces / Same old stuff |
| SOS | Save our Shareware |
| SOSIG | Social Science Information Gateway |
| SOST | Special Operator Service Treatment |
| SOT | Short Of Time / (SoT) The Sea of Tranquility |
| SOTMG | Short Of Time Must Go |
| SP | Security Protocol / Service Provider / Sharp Private / Signal Processor / Signaling Point / Stack Pointer |
| SPA | Software Publishers Association |
| SPAG | Standards Promotion and Application Group |
| SPAM | SPiced hAM. Hormel's canned meat. |
| SPAN | Space Physics Analysis Network |
| SPARC | Scalable Performance Architecture |
| SPC | Southern Pacific Communications / Stored Program Control |
| SPCS | Stored Program Control Systems |
| SPCSS | Stored Program Control Switching System |
| SPD | Software Product Description |
| SPDA | Supplier Data Program |
| SPDL | Standard Page Description Language |
| SPDU | Session Protocol Data Unit |
| SPE | Synchronous Payload Envelope |
| SPEC | Standard Performance Evaluation Corporation |
| SPF | Shortest Path First |
| SPG | Software Product Group |
| SPH | Sets Per Hour |
| SPI | Safeguarding Proprietary Information / Self-Paced Instruction / Serial Peripheral Interface / Subsequent Protocol Identifier |
| SPID | Service Profile Identification / Service Protocol Identifier |
| SPKI | Simple Public Key Infrastructure |
| SPLaT | Society for the Preservation of Lasting Anarchy and Terrorism |
| SPM | Session Protocol Machine / Sheets Per Minute / Software Performance Monitor |
| SPMF | Servo Play Mode Function |
| SPN | Signal Processor Network |
| SPOOL | Simultaneous Peripheral Operation OnLine |
| SPP | Sequenced Packet Protocol / Ship Plan / Standard Parallel Port |
| SPS | Self Preservation Society / Software Product Services / Standby Power Supply |
| SPTS | Single Program Transport Stream |
| SPUC | Serial Peripheral Unit Controller |
| SPUC/DL | Serial Peripheral Unit Controller / Data Link |
| SPX | Sequenced Packet eXchange |
| SQD | Signal Quality Detector |
| SQE | Signal Quality Error |
| SQL | Structural Query Language |
| SQL/DS | Structured Query Language / Data System |
| SQL-DMO | Structured Query Language - Distributed Management Objects |
| SQM | Software Quality Management |
| SQUID | Super-conducting Quantum Interference Device |
| SR | Source Routing |
| SRA | Selective Routing Arrangement |
| SRAM | Static Random Access Memory |
| SRB | Source Route Bridging |
| SRC | Source (code) / System Resource Center |
| SRE | Scully Rational Explanation / Standards for Robot Exclusion |
| SREJ | Selective Reject |
| SRF | Specifically Routed Frame |
| SRG | Shareware Reference Guide / Strategic Relations Group |
| SRI | Stanford Research Institute |
| SRL | Singing Return Loss |
| SRT | Source Routing Transparent |
| SRTC | Service Right-to-Copy |
| SRTS | Synchronous Residual Time Stamp |
| SRUAPDU | Status Report User Agent Protocol Data Unit |
| SR-UAPDU | Status Report User Agent Protocol Data Unit |
| SS | (U.S.) Secret Service / Server-to-Server / Session Service / Signaling System / Socket Services / Special Services / Stack Segment / Standard System |
| SS/DD | Single - Sided Double Density |
| SS6 | Signaling System 6 |
| SS7 | Signaling System 7 |
| SSA | Serial Storage Architecture |
| SSAN | Social Security Account Number |
| SSAP | Session Service Access Point / Source Service Access Point |
| SSAS | Station Signaling and Announcement System/Subsystem |
| SSB | Single Side Band / Software Supply Business |
| SSBAM | Single-Side Band Amplitude Modulation |
| SSBSC | Single SideBand Suppressed Carrier |
| SSC | Special Services Carrier/Center |
| SSCF | Service Specific Coordination Function |
| SSCOP | Service Sepecified COnvergence Protocol / Service Specific Connection Oriented Protocol |
| SSCP | System/Subsystem Services Control Point / Service Specific Convergence Sublayer |
| SSD | Solid State Disk |
| SSDD | Same stuff different day |
| SSDU | Session Service Data Unit |
| SSEL | Session Selector |
| SSFD | Solid State Floppy Disk |
| SSG | Software Systems Group / Strategic Studies Group / Suburban Survival Guide |
| SSI | Small Scale Integration |
| SSL | Secure Sockets Layer (security protocol) / Standard Security Label |
| SSM | Single Segment Message |
| SSN | Social Security Number |
| SSN | Switched Service Network |
| SSO | Satellite Switching Office |
| SSODB | Secret Society Of Dark Birds |
| SSP | Service Switching Point / Switching Service Point / Sponsor Selective Pricing / System Status Panel |
| SSPA | Solid State Power Amplifier |
| SSPC | System Status Panel Controller |
| SSPI | Security Service Provider Interface |
| SSPRU | System Status Panel Relay Unit |
| SSS | Server Session Socket / Software Support Services / Strowger Switching System |
| SST | Single Sideband Transmitter |
| SSTDMA | Spacecraft Switched Time Division Multiple Access |
| SSTTSS | Space-Space-Time-Time-Space-Space Network |
| ST | Seagate Technology (as in ST506 and ST412 interfaces) / Segment Type / Start / Straight Tip |
| STA | Spanning Tree Algorithm |
| STANO | Surveillance Target Acquisition and Night Observation |
| STAR | Systems and Technology Applications Requirements |
| STB | Start of Text Block |
| STC | Serving Test Center / Switching and Testing Center / Switching Technical Center |
| STD | STandarD |
| STD | Subscriber Trunk Dialing |
| STDA | StreetTalk Directory Assistance |
| STDM | Statistical Time Division Multiplexing |
| STE | Section Terminating Equipment (SONET) / Signal Terminal Equipment / Spanning Tree Explorer |
| STEP | Software Test and Evaluation Panel |
| STF | Standard Transaction Format |
| STFU | Shut The Fu*k Up |
| STG | Strategic Technologies Group |
| STI | Single Tuned Interstage |
| STI/ST-TMP | Star Trek first movie/The Motion Picture |
| STII/ST-WOK | Star Trek second movie/'Wrath of Khan' |
| STIII/ST-SFS | Star Trek third movie/'Search for Spock' |
| STIV/ST-TVH | Star Trek fourth movie/'The Voyage Home' |
| STM | Scanning-Tunneling electron Microscope / Synchronous Transfer Mode |
| STMF | State Management Function |
| STMI | Synchronous Transport Module i (usually as STM-i) |
| STM-I | Synchronous Transport Module i (usually as STM-i) |
| STN | Super Twisted Nematic (material) |
| STOC | Symposium on the Theory Of Computing |
| Storage | Management Subsystem |
| STP | Shielded Twisted Pair / Shielded Twisted Pair / Signal Transfer Point / Signal Transfer Protocol |
| STR | Synchronous Transmit Receive |
| STS | Shared Tenant Service / Space-Time-Space Network / Synchronous Time Stamp / Synchronous Transport Signal |
| STS3C | Synchronous Transport System level 3 Concatenated (usually as STS-3c) |
| STT | Secure Transaction Technology |
| ST-TNG | Star Trek The Next Generation |
| ST-TOS | Star Trek The Original Series |
| STV/ST-TFF | Star Trek fifth movie/'The Final Frontier' |
| STVI/ST-TUC | Star Trek sixth movie/'The Undiscovered Country' |
| STX | Start of TeXt (ASCII) |
| SU | Service User |
| SUA | Stored Upstream Address |
| SUABORT | Session User Abort |
| SUB | Subaddressing |
| SUBLIB | SUBroutine LIBrary |
| SUE | Stupid User Error |
| SUFF | Suffix |
| SUM | Smart Uplink Module |
| SUN | Stanford University Networks |
| SUNet | Stanford University Network |
| SUP | What's up |
| SUT | System Under Test |
| SUV | Sport Utility Vehicle |
| SVC | (frame relay) Switched Virtual Channel / Switched Virtual Circuit |
| SVCI | Switched Virtual Circuit Identifier |
| SVD | Simultaneous Voice / Data |
| SVGA | Super Video Graphics Adapter |
| SVGA | Super Video Graphics Array |
| SVID | System V Interface Definition |
| SVN | Switched Virtual Network |
| SVP | Switched Virtual Path |
| SVPN | Secure Virtual Private Network |
| SVS | Switched Voice Service |
| SW | Shareware |
| SWAG | Scientific Wild A** Guess |
| SWAK | Sealed With A Kiss |
| SWAN | Satellite Wide Area Network / Secure Wide Area Network |
| SWaT | Special Warez Acquisition Team |
| SWB | SouthWestern Bell |
| SWC | Serving Wire Center |
| SWG | Special Working Group / Sub-Working Group / Standards Working Group |
| SWIFT | Society for Worldwide Interbank Financial Telecommunications |
| SWIM | Super Woz Integrated Machine |
| SWL | Screaming with Laughter |
| SWM | Semiconductor Worldwide Management |
| SWMBO | She Who Must Be Obeyed |
| SWMC | (DMTF) Support Management Working Committee |
| SWO | Standards Writing Organization |
| SWOA | Social Workers On Acid (usually as SWoA) |
| SWS | SoftWare Services |
| SX | Simplex (signaling) |
| SXS | Step-by-Step / Strowger Switch |
| SYC | SYstem Control / Synchronize (flag) / SYNchronous / idle (ASCII) |
| SYL | See you later |
| SYS | See You Soon / System |
| SYSCON | System Configuration |
| SYSEX | SYStem EXclusive (message) |
| SYSGEN | SYStem GENeration |
| SYSOP | SYStem Operator aka God |
| Sysop | Systems Operator; person who manages a Forum |
| S&NIJUG | Scottish and Northern Ireland Janet User Group |
| S | Shareable / Sleeve |
| S/MIME | Secure Multimedia Internet Mail Extensions |
| S/WAN | Secure Wide Area Network |
| S2MP | Scalable Shared memory MultiProcessor |
| SA | Assistant Scoutmaster / Selective Availability / Source Address / Storage Array / Study Administration |
| SAA | Service Aspects and Applications / Systems Application Architecture |
| SAAL | Signalling ATM Adaptation Layer |
| SABB | Storage Array Building Block |
| SABM | Set Asynchronous Balanced Mode |
| SABME | Set Asynchronous Balanced Mode Extended |
| SABRE | Semi-Automatic Business Research Environment |
| SAC | Service Area Code / Special Area Code / Service Area Computer / Simplified Access Control / Single Attachment Concentrator / |
| SACF | Single Association Control Function |
| SACK | Selective ACKnowledgment |
| SAF | Subnetwork Access Facility |
| SAFE | Security And Freedom through Encryption / Security Awareness From Education |
| SAFENET | Survivable Adaptable Fiberoptic Embedded Network |
| SAFTE | SCSI Accessed Fault-Tolerant Enclosure |
| SAF-TE | SCSI Accessed Fault-Tolerant Enclosure |
| SAG | SQL Access Group / Street Address Guide |
| SAGE | Semi-Automatic Ground Environment |
| SAI | Serving Area Interface |
| SAIL | Stanford Artificial Intelligence Lab |
| SAK | Selective AcKnowledgment |
| SALI | Standalone Automatic Location Identification/Information |
| SALSER | Scottish Academic Libraries Serials Project |
| SAM | Secure Access Multiport |
| SAMA | Step-by-step Automatic Message Accounting |
| SAMNET | (UK) Sub-Auroral Magnetometer Network |
| SAN | System Area Network / Storage Area Network |
| SAO | Single Association Object |
| SAP | Secondary or Separate Audio Program / Service Access Point / Service Advertising Protocol |
| SAPI | Service Access Point Identifier / Speech Application Programming Interface |
| SAR | Some Assembly Required / Segmentation And Reassembly / Store Address Register |
| SARC | Symantec Antivirus Research Center |
| SARF | Security Alarm Reporting Function |
| SARM | Set Asynchronous Response Mode |
| SARTS | Switched Access Remote Test System |
| SAS | Single Attachment Station/System / Special Access Surcharge / Statistically Assigned Sockets / SWITCH Access System / Switched Access Services |
| SASE | Self Addressed Stamped Envelope / Special Application Service Element / System And Support Engineering |
| SASFE | SEF/AIS Alarm Signal |
| SASI | Shugart Associates System Interface |
| SASO | Saudi Arabian Standards Organization |
| SAT | Special Access Termination / Supervisory Audio Tone |
| SATAN | Security Administrator Tool for Analyzing Networks |
| SATF | Security Audit Trail Function |
| SATNET | SATellite NETwork |
| SATS | Selected Abstract Test Suite |
| SAW | Surface Acoustic Wave |
| SBA | Shipping and Billing Authorization |
| SBB | System Building Block |
| SBC | Single Board Computer |
| SBCN | Sitting Behind the Computer Naked |
| SBCS | Single - Byte Character Set |
| SBD | silent but deadly (fart) [Beavis & Butthead] cos because |
| SBDN | Southern Bell Data Network |
| SBI | Storage Bus Interconnect |
| SBIR | Small Business Innovation Research (program) |
| SBIT | Startup Built In Test |
| SBL | Softbridge BASIC Language |
| SBMS | Southwestern Bell Mobile Service |
| S-BOX | Skunk Box |
| SBP | Serial Bus Protocol (sometimes as SBP-2) |
| SBR | Storage Business Review |
| SBS | Satellite Business Systems / Skyline Business Systems |
| SBT | Software Business Technologies |
| SC | Scanner Controller / Sectional Center / SubCommittee / Subscriber Connector |
| SCA | Short Code Address / Strategic Capital Acquisitions / Subsidiary Communication Authorization / Swiss Cracking Association |
| SCAI | Switch to Computer Application Interface |
| SCAM | SCSI Configured Auto-Magically |
| SCAT | Special Computerized Attack Team / Stromberg-Carlson Assistance Team |
| SCC | Satellite Communications Control / Specialized Common Carrier(s) / Standards Council of Canada / Switching Control Center |
| SCCP | Signaling Connection Control Part |
| SCCS | Specialized Common Carrier Service / Switching Control Center System |
| SCD | Software Chronical Digest |
| SCE | Service Creation Environment |
| SCF | Sectional Center Facility / Selective Call Forwarding |
| SCFM | Sub-Carrier Frequency Modulation |
| SCI | Scalable Coherent Interface / Strategic Computing Initiative |
| SCIT | Semi-Conductor and Interconnect Technologies |
| SCL | Switch to Computer Link |
| SCLM | Software Configuration and Library Manager |
| SCM | Software Configuration Management / Station Class Mark / Subscriber Carrier Module |
| SCMP | System Cooperative Marketing Program |
| SCNR | Sorry CouldN't Resist |
| SCNR | Sorry CouldN't Resist |
| SCO | SemiConductor Operations / Serving Central Office |
| SCONUL | Standing Council of National and University Libraries |
| SCOP | Standing Conference of Principals of Colleges |
| SCOT | Stepper Central Office Tester |
| SCOTS | Surveillance and Control Of Transmission System |
| SCP | Service/Signal/System Control Point / Signal Conversion Point / System Control Program |
| SCPAM | Simple Coded - Pulse Amplitude Modulation |
| SC-PAM | Simple Coded - Pulse Amplitude Modulation |
| SCPC | Single-Channel Per Carrier / Single-Channel Per Connection |
| SCPD | Supplementary Central Pulse Distributor |
| SCR | Selective Call Rejection / Silicon Control Rectifiers / Sustainable Cell Rate / Sustained Cell Rate / Satellite Communications Systems |
| SCS | Silicon Controlled Switches / SNA Character String / SWITCH Central System / System Communication Services / System Conformance Statement |
| SCSA | Signal Computing System Architecture |
| SCSI | System Can't See It / Small Computer Standard/System/Storage Interface |
| SCT | Screen Capture Text |
| SCTO | Soft Carrier Turn-Off |
| SCTR | System Conformance Test Report |
| SCU | Selector Control Unit |
| SCUSA | Standards Council of the United States of America |
| SCX | Specialized Communications eXchange |
| SD | (modem) Send Data / Start Delimiter |
| SD&D | Specific Development & Design |
| SDA | Security Domain Authority / Silicon Dream Artists / Software Design Automation |
| SDAP | Standard Document Application Profile |
| SDC | Software Distribution Center |
| SDE | Submission and Delivery Entity |
| SDF | Screen Definition Facility / Standard Data Format |
| SDH | Synchronous Digital Hierarchy |
| SDI | Standard Disk Interconnect / Standard Drive Interface / Strategic Defense Initiative / Supplier Declaration of Inter-operation |
| SDIF | SGML Document Interchange Format |
| SDIS | Switched Digital Integrated Service |
| SDK | Software Development Kit / Software Developer's Kit |
| SDL | Shielded Data Link / Specification and Description Language |
| SDL/GR | Specification and Description Language Graphical Representation |
| SDL/PR | Specification and Description Language Phrase Representation |
| SDLC | Synchronous Data Link Control |
| SDLGR | Specification and Description Language Graphical Representation |
| SDLP | Standard Device Level Protocol |
| SDLPR | Specification and Description Language Phrase Representation |
| SDM | Space Division Multiplexing / Shareware Distribution Network / Software Defined Network |
| SDNS | Secure Data Network System |
| SDSN | Secure Data System Network |
| SDO | Standards Development Organization |
| SDOC | Selective Dynamic Overload Controls |
| SDP | Service Delivery Point / Store Delivery Point |
| SDR | Store Data Register |
| SDRAM | Synchronous Dynamic Random Access Memory |
| SDRP | Source Demand Routing Protocol |
S
SAAF :- South Asian Accountants Federation
SAARC :- South Asian Association for Regional Cooperation
SADCC :- South African Development Corporation Conference
SAFMA :- South Asian Free Media Association
SAHR :- South Asians for Human Rights
SAI :- Sports Authority of India
SAIL :- Steel Authority of India Limited
SALT :- Strategic Arms Limitation Tax
SAPTA :- South Asian Preferential Trade Arrangement
SARS :- Service Acute Respiratory Syndrome
SATO :- South Atlantic Treaty Organization
SATTE :- South Asian Travel and Tourism Exchange
SC :- Security Council / Supreme Court / Scheduled Caste
SCHIL :- Stock Holding Corporation of India
SCI :- Shipping Corporation of India
SCL :- Space Corporation Limited
SCOPE :- Standing Conference of Public Enterprises
SCRA :- Special Class Railway Apprentice
SDK :- System Development Kit OR Sun Development Kit
SDR :- Special Drawing Rights
SEARCH :- Society for Environmental Awareness and Rehabilitation of Child and Handicapped
SEATO :- South East Asia Treaty Organization
SEBI :- Security Exchange Board of India
SEEPZ :- Santacruz Electronic Export Processing Zone
SEO :- Satellite for Earth Observation
SERC :- Structural Engineering Research Centre
SETS :- Society of Electronics Transaction and Security
SEWA :- Self Employed Women's Association
SFALA :- Small Farmers and Agricultural Labourers Agency
SFC :- Strategic Force Command
SGPC :- Siromani Gurudwara Prabandhak Committee
SHAR :- Shri Harikota Range
SAHMAT :- Safdar Hashmi Memorial Trust
SIAM :- Society of Indian Automobiles Manufacturers
SIDS :- Sudden Infant Death Syndrome
SIDBI :- Small Industries Development Bank of India
SITA :- Separation of Immoral Traffic in Women and Girls Act
SIS :- Secret Intelligence Service
SIV :- Semen Immuno Deficiency Virus
SLAR :- Sight Looking Environment Radar
SLBM :- Submarine Launch Balistic Missile
SLV :- Satellite Launch Vehicle
SMART :- Small Mission for Advance Research
SMS :- Short Messaging System
SNIPES :- Society of National Institutes for Physical Education and Sports
SPCA :- Society for the Prevention of Cruelty to Animals
SROSS :- Stretched Rohini Satellite Series
SSD :- Satellite System Division
SSN :- Social Security Number
SSTEP :- Symphonic Satellite Telecommunication Experiment Project
STARS :- Satellite Training and Ranging System
START :- Strategic Armed Reduction Talks
STD :- Subscribers Trunk Dialing OR Sexually Transmitted Disease
STEC :- Solar Thermal Energy Centre
STEP :- Satellite Telecommunication Experiment Project
STPI :- Software Technology Park of India
SUNFED :- Special United Nations Fund for Economic Development
SWAPO :- South West African Peoples Organization
SWIFT :- Short Work Programme in Information Technology
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