S...

• SA Selective Availability
• SAA Systems Application Architecture [IBM]
• SABRE Semi-Automatic Business Research Environment
• SAC Single Attachment Concentrator
• SACD Super Audio Compact Disk
• SACL System Access Control List
• SADL Synchronous Data Link Control [Racal-Vadic]
• SAINT * Symbolic Automatic Integrator
• SAL Shift Arithmetic Left + Spatial Aggregation Language
• SAM Serial Access Memory + Sequential Access Method + Security Accounts Manager [Microsoft] + Single Application Mode [Microsoft]
• SAML Security Assertion Markup Language
• SAN Storage/System Area Network
• SANE Standard Apple Numeric Environment
• SAP Second Audio Program + Service Access Point [DEC] + Session Announcement Protocol + Service Advertising Protocol + * Symbolic Assembly Program + Systems, Applications and Products (company)
• SAPI Speech Application Program Interface [Microsoft]
• SAR Segmentation and Reassembly + Shift Arithmetic Right + Specific Absorption Rate
• Successive Approximation Register + Synthetic Aperature Radar
• SARG Search Argument
• SAS Sales Accounting System + Single Attached Station + Single Audio System + Statistical Analysis System
• SASI Shugart Associates System Interface (SCSI originated
• from SASI)
• SATA Serial Advanced Technology Attachment
• SATAN Security Administrator Tool for Analyzing Networks
• .SAV Saved (file name extension)
• SAVDM Single Application VDM
• SAX Simple API for XML
• SB Sound Blaster [Creative Labs] + Sound Board
• SBA Scene Balance Algorithms [Kodak] + Service Based Architecture
• SBAS Satellite Based Augmentation System
• SBB Subtract With Borrow
• SBC Single-Board Computer
• SBCS Single-Byte Character Set
• SBI Sound Blaster Instrument
• .SBR Source Browser (file name extension) [Borland]
• SBS Small Business Server + Smart Battery Specification [Duracell/Intel]
• .SC Script (file name extension)
• SCA Scalable Computing Architecture [HP]
• SCADA Supervisory Control and Data Acquisition
• SCAM SCSI Configuration Automatically
• SCAS Scan String
• SCB Subsystem Control Block [IBM]
• SCC Serial Communications Controllers + Serial Controller Chip + Synchronous Channel Check [IBM]
• SCCP Simple Conference Control Protocol
• SCCS Source Code Control System
• SCD Standard Color Display
• S-CDMA Synchronous Code-Division Multiple Access
• SCF System Control Facility
• SCI Scalable Coherent Interface + Serial Communications Interface
• SCI. Science [USENET Newsgroup Category]
• SCIL Serial Control Interface Logic
• SCLM Software Configuration and Library Management [IBM]
• SCM Service Control Manager + ScreenCam Format [Lotus] + Software Configuration Management + Station Class Mark
• SCO Santa Cruz Operation (Software Company) + Synchronous Connection-Oriented (link)
• SCOPE Simple Communications Programming Environment
• [Hayes]
• SCP Save Cursor Position + Subsystem Control Port + System Control Program
• SCR Silicon Controlled Rectifier
• .SCR Script (file name extension)
• SCRAM Software Configuration, Release and Management
• SCRN Screen (video display)
• SCRS Scalable Cluster of RISC Systems
• SCSA Signal Computing System Architecture [Dialogic]
• SCSI Small Computer Systems Interface
• SCTP Stream Control Transmission Protocol
• SD Send Data + Super Density
• SDA Software Delivery Agent [IBM] + Software Disk Array + Source Data Automation + System Display Architecture [Digital]
• SDAM Single DOS Application Mode
• SDB Symbolic Debugger [Unix]
• SDD Software Description Database [Internet] + Subscriber Data Document + System Distribution Directory
• SDF Space Delimited File + Space Delimited Format
• .SDF Standard Data Format (file name extension)
• SDH Synchronous Digital Hierarchy
• SDI Selective Dissemination of Information + Single Document Interface
• Software Development Interface [Mosaic]
• SDK Software Development Kit [Microsoft]
• SDL Specification and Description Language
• SDLC Synchronous Data Link Control (protocol)
• SDM System Development Multitasking
• SDMI Secure Digital Music Initiative/Interface
• SDMMC Secure Digital Multi Media Card
• SDMS SCSI Device Management System [NCR]
• SDN Software Defined Network [AT&T]
• SDNS Secure Data Network Service
• SDR Streaming Data Request
• SDRAM Synchronous DRAM
• SD-ROM Super Density ROM
• SDS Sysops Distribution System
• SDSL (See DSL)
• SD_STB Streaming Data Strobe [IBM]
• SDTV Standard Definition Television
• SDV Switched Digital Video [AT&T]
• SDX Storage Data Acceleration
• SDXF Structured Data Exchange Format
• SEA Standard Extended Attribute [OS/2]
• .SEA Self Extracting Archive (file name extension) [Macintosh]
• SEAC * Name of first computer to use transistors, built by
• (National Bureau of) Standards Eastern Automatic
• Calculator (Also see SWAC)
• SEAL Segmentation and Reassembly Layer (protocol) + Screening External Access Link [Digital-DEC]
• SEC Single Error Correction
• SECAM Sequentiel Couleur Avec Memoire
• (Sequential Color With Memory)
• SECC Single Edge Contact Cartridge
• SED Stream Editor + Stream-Oriented Editor
• SEG Segment
• SEH Structured Exception Handling
• SEL Select
• SEM Scanning Electron Microscope + Standard Electronic Module + Strategic Enterprise Management [SAP]
• SEPP Secure Encryption Payment Protocol
• SER Serial
• SERCOS Serial Real-Time Communications System
• SET Secure Electronic Transaction + Softwave Engineering Technology
• .SET Driver Set (file name extension) [Lotus 1-2-3] [LDC] + Image Settings (file name extension) [Paradox]
• SETEXT Structure Enhanced Text [Internet]
• SEU Single Event Upset + Smallest Executable Unit
• SF Sign Flag
• SFC System File Checker
• SFD Start Frame Delimiter
• SFDR Spurious-Free Dynamic Range
• SFI Software Fault Isolation
• SFN Short File Name
• SFQL Structured Full-text Query Language
• SFS System File Server
• SFT System Fault Tolerance
• SFX Self Extracting + Sound Effect(s)
• SGA Shared Global Area
• SGCP Simple Gateway Control Protocol
• SGEN Signal Generator + System Generator
• SGDT Store Global Descriptor Table
• SGI Silicon Graphics, Inc.
• SGM Shaded Graphics Modeling
• SGML Standard Generalized Markup Language
• SGR Set Graphics Rendition
• SGRAM Synchronous Graphics RAM
• S/H Sample and Hold
• SHA Secure Hash Algorithm [NSA]
• SHAR Shell Archive
• SHED Segmented Hypergraphic Editor
• SHG Segmented Hypergraphics
• SHL Shift Logical Left
• SHOE Simple HTML Ontology Extension
• SHR Shift Logical Right
• SHTML Server-Side Include HyperText Markup Language
• S-HTTP Secure Hypertext Transfer Protocol
• SHV Standard High-Volume
• .SHW Show (file name extension)
• SI Shift-In + Source Index + System Information + System Integration
• SIC Standard Industrial Code
• SID Security Identifier + Serial Input Data + Station Identification [AT&T] + Symbolic Interactive Debugger + System ID
• SIDF System Independent Data Format
• SIDH System Identification for Home Systems
• SIDT Store Interrupt Descriptor Table
• SIFT Stanford Information Filtering Tool
• SIG Special Interest Group
• SIGCAT Special Interest Group on CD-ROM Applications
• and Technology
• SIM Simulator + Subscriber Identity Module
• SIMD Single Instruction, Multiple Data-stream (processor)
• SIMM Single In-line Memory Module
• SIMTEL Simulation and Teleprocessing
• SIMULA Simulation (language)
• SIO Serial Input/Output (communications driver)
• SIP Session Initiation Protocol + Single In-line Package
• SIPC Simply Interactive Personal Computer [Microsoft]
• SIPO Serial In, Parallel Out
• SIPP Single In-line Pin Package
• SIR Serial Infrared [Hewlett-Packard]
• SIRDS Single-Image Random Dot Stereogram
• SISL System Interrupt Steering Logic
• SISNET Signal In Space Through The Internet
• SI/SO Serial In/Serial Out + Shift In/Shift Out
• SIT Special Information Tones
• .SIT Stuff-It (compressed file name extension) [Macintosh]
• SIU System Interface Unit
• SIV System Integrity Verifier
• SKIP Simple Key-Management for Internet Protocols [Sun]
• SKU# Stock Keeping Unit Number
• SLA Service Level Agreement
• SLB Static Load Balancing
• SLC Subscriber Line Concentrator
• SLD Second-Level Domain (name)
• SLDT Store Local Descriptor Table
• SLED Single Large Expensive Disk
• SLIC System Level Integration Circuit + System Licensed Internal Code [IBM]
• SLIM Structured Language for Internet Markup
• SLIP Serial Line Interface Protocol
• SLM Spatial Light Modulator
• SLMR Silly Little Mail Reader
• SLOSH Sea, Lake and Overland Surge from Hurricane (program)
• SLOT Scanned Laser Output Terminal
• SLP Service Location Protocol
• SLR Single Lens Reflex
• SLSI Super Large-Scale Integration
• SLSS Systems Library Subscription Service [IBM]
• SLU Spoken Language Understanding
• SM Set Mode + Shared Memory
• SMA Software Migration Assistant [IBM]
• SMART Self-Monitoring Analysis and Reporting Technology
• SMB Server Message Block (protocol) [MII]
• SMD Surface Mounted Device
• SMDR Station Message Detail Recording
• SMDS Switched Multimedia/Multi-Megabit Data Service
• SMF Single Mode Fiber + System Manager Facility [Compaq]
• SMI System Management Interrupt [Intel]
• SMIF Standard Mechanical Interface
• SMIL Synchronized Multimedia Integration Language
• S-MIME Secure MIME
• SMIT System Management Interface Tool [IBM]
• SMK Software Migration Kit [Microsoft]
• SML Standard Meta Language
• SMM System Management Mode [Intel]
• SMOBC Solder Mask Over Bare Copper
• SMP Simple Management Protocol + Symbolic Manipulation
• Program + Symmetrical Multi-Processing + Symmetric Multiprocessor
• .SMP Sample (file name extension)
• SMPC Shared Memory Parallel Computer
• SMPS Switching Mode Power Supply
• SMRAM System Management Random Access Memory
• SMS Short Message Service [Sprint] + Small Messaging System + Storage Management Services [NetWare] + Storage Management Subsystem/System + Systems Management Server [Microsoft]
• SMSW Store Machine Status Word
• SMT Station Management (protocol) + Surface-Mount Technology
• SMTP Simple Mail Transfer Protocol
• SMU System Management Utility
• SN Serial Number
• S/N Signal-to-Noise (Ratio)
• SNA Systems Network Architecture [IBM]
• SNAP Sub-Network Access Protocol + Sub-Network Attachment Point
• SNAPI Structured N-Dimensional Application Program
• Interface [Oracle]
• SND Sound
• SNEWS Secure News Server [Internet]
• SNMP Simple Network Management Protocol
• SNOBOL String Oriented Symbolic Language (Programming Language)
• SNP Serial Number/Password [Omen Technology]
• SNR Signal-to-Noise Ratio
• SOA Start Of Authority
• SOAP Simple Object Access Protocol
• SOC System On a Chip
• SOC. Social Issues [USENET Newsgroup Category]
• SOCKS Socket Secure (server) [Internet]
• SO-DIMM Small Outline DIMM
• SOE Standard Operating Environment
• SOH Start of Header
• SOHO Small Office/Home Office
• SOI Silicon-On-Insulator [IBM]
• SOJ Small-Outline J-Lead
• SOL Simulation Oriented Language
• SOM Start of Message + System Object Model [IBM]
• SONAR Sound Navigation and Ranging
• SONET Synchronous Optical Network
• SOP Small Outline Package + Standard Operating Procedures
• SOS Silicon On Sapphire + Sophisticated Operating System + Standards and Open Systems
• SOTA State Of The Art
• SOX Sound Exchange
• SP Service Pack [IBM] + Stack Pointer + System Product
• SPA Secure Password Authentication [Microsoft] + Software Publishers Association
• SPAN Space Physics Analysis Network
• SPAP Shiva Password Authentification Protocol
• SPARC Scalable Processor Architecture + Sun's Palo Alto Research Center
• SPC Small Peripheral Controller + Statistical Process Control
• SPCL Spectrum Cellular Corporation
• SPCS Stored Program Controlled Switch
• SPD Serial Presence Detect
• SPEC Systems Performance Evaluation Cooperative
• SPF Shortest Path First + System Programming Facility
• SPGA Staggered Pin-Grid Array
• SPI Security Parameters Index + Service Provider Interface + SCSI Parallel Interface + Stateful Packet Inspection
• .SPI Spool (file name extension)
• SPID Service Profile/Provider Identifier
• SPIKE Science Planning Intelligent Knowledge-Based
• Environment [STScI]
• SPIRES Stanford Public Information Retrieval System
• [Stanford University]
• SPL Spooler + System Programming Language [HP]
• .SPL Spell Checker (file name extension)
• SPLD Simple Programmable Logic Device
• SPM System Performance Monitor [IBM]
• SPOOL Simultaneous Peripheral Operations On Line
• SPOT Shared Product Object Tree [IBM]
• SPP Sequenced Packet Protocol + Standard Printer Port
• SPPS Scalable Power Parallel System [IBM]
• SPR Special Purpose Register + Statistical Pattern Recognition + Symmetrical Phase Recording
• SPREAD * Systems Programming, Research, Engineering
• and Development [IBM]
• SPS Secure Packet Shield + Shock Protection System + Standby Power System
• SPSS Statistical Package for the Social Sciences
• SPT Sectors Per Track
• SPX Sequenced Packet Exchange [Novell]
• SQ Squeezed (files)
• SQE Signal Quality Error (test)
• SQL/DS Structured Query Language/Data System [IBM]
• SQOS Secure Quality Of Service
• SQRT Square Root
• SR Shift Register
• SRAM Shadow Random Access Memory + Static Random Access Memory
• SRAPI Speech Recognition API
• SRB Source-Route Bridge
• SRC System Resource Controller
• .SRC Source (file name extension)
• SRD Screen Reader System
• SRDRAM Self-Refreshed DRAM
• SRGB Sustained RGB (values)
• SRM Security Reference Monitor
• SRO Sharable and Read Only
• SRP Suggested Retail Price
• .SRP Script (file name extension)
• SRPI Server-Requester Programming Interface
• SRQ Service Request
• SRR Serially Reusable Resource
• SRS Sound Retrieval System
• SS Stack Segment + Single Sided + Seconds
• SS7 Signaling System 7 [Bellcore]
• SSA Serial Storage Architecture
• SSAD Structured System Analysis and Design
• SSAP Source Service Access Point
• SSCP Systems Service Control Point [IBM]
• SSD Solid State Disk
• SSEC * Selective Sequence Electronic Calculator [IBM]
• SSGA System Support Gate Array
• SSH Secure Shell (protocol)
• SSI Server Side Includes + Single System Image + Small Scale Integration
• SSL Secure Sockets Layer
• SSO Single Sign On
• SSPI Security Service Provider Interface [Microsoft]
• SSRP Simple Server Redundancy Protocol [Cisco]
• SST Spread-Spectrum Technology + Systems Services and Technology
• STA Spanning Tree Algorithm
• STAR Self Defining Text Archival
• STB Strobe
• STC Set Carry Flag
• STD Set Direction Flag + Standard
• STDA StreetTalk Directory Assistance [Banyan]
• STDAUX Standard Auxilary
• STDERR Standard Error
• STDIN Standard Input
• STDIO.H Standard Input/Output Header [C Programming Language]
• STDM Statistical Time Division Multiplexer
• STDOUT Standard Output
• STDPRN Standard Printer
• STEP Standard for Exchange of Product
• .STF Structured File (file name extension) [Lotus Agenda]
• STI Set Interrupt Flag
• S/TK Sectors Per Track
• STL Standard Template Library
• STM Scanning Tunneling Microscope
• STN Super-Twist Nematic
• .STORE Businesses Offering Goods (Domain Name) [Internet]
• STOS Store String
• STP Secure Transfer Protocol + Shielded Twisted Pair (cable) + Signal Transfer Point + Synchronized Transaction Processing
• STR Store Task Register + Synchronous Transmitter Receiver
• STRESS Structural Engineering System Solver (Programming
• Language)
• STRUDL Structural Design Language (Programming Language)
• STScI Space Telescope Science Institute
• STT Secure Transaction Technology [Microsoft]
• STX Start of Text
• .STY Style (file name extension) [Ventura, Word, WordPerfect]
• SUB Subroutine + Substitute + Subtract
• SUN Sun Microsystems, Inc.
• .SUP Supplemental Dictionary (file name extension)
• [WordPerfect]
• SVC Switched Virtual Circuit
• SVF Simple Vector Format
• SVG Scalable Vector Graphics
• SVGA Super Video Graphics Array
• S-VHS Super VHS
• SVM System Virtual Machine [Microsoft] + System Volume Mangement
• SVN Switched Virtual Network [IBM]
• SVR Server
• SVR# System V Release Number [AT&T]
• S/W Software
• SWAC * Mobile version of SEAC, built for deployment to White
• Sands, and named Standards Western Automatic Calculator
• SWAIS Simple Wide Area Information Server [Internet]
• SWAP Shared Wireless Access Protocol
• SWIG Simplified Wrapper and Interface Generator
• SWISH Simple Web Indexing System for Humans
• SWP Simple Web Printing
• .SWP Swap (file name extension)
• .SYL Syllabus (file name extension)
• SYLK Symbolic Link
• .SYM Symbols (file name extension)
• .SYN Synonym (file name extension)
• SYNC Synchronous
• SYS System
• .SYS System Configuration (file name extension) + System Device Driver (file name extension)
• SYSADMIN System Administrator
• SYSGEN System Generator
• SYSLOG System Log
• SYSMOD System Modification
• SYSOP System Operator
• SYSREQ System Request
• SZ Send ZModem [Unix]