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Acronyms and abbreviations in English.

An acronym is a word or name formed as an abbreviation from the initial components of a phrase or a word, usually individual letters. There are no universal standards for the multiple names for such abbreviations or for their orthographic styling.

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There are currently 325 terms in this directory beginning with the letter S.
S.
South
s.a.
sine anno
s.a.e.
stamped addressed envelope
S.Afr.
South Africa, -n
s.l.a.
sine loco annoque
s.n.
sine nomine
S.N.D.
Scottish National Dictionary
s.v.
sub voce, under the word
s.w.
south-western (dialect)
S2BX
Soon To Bee X
SA
1. Saudi Arabia.
2. Success Achiever.
3. Something Awful.
4. Software Assurance.
SAA
1. Systems Application Architecture.
2. South African Airways.
SABHATA
Sand & Ballast Haulage & Transport Association
SABS
South African Bureau of Standards
SAC
Supplier Assurance Contract
SACI
Space Assignments & Capital Improvements Committee (Berkeley University)
SACO
Subject Authority Cooperative Program
SACTRA
Standing Advisory Committee on Truck Road Assessment
SAE
Society of Automotive Engineers (USA)
SAFED
Safe and Fuel Efficient Driving
SAFI
Subsequent Address Family Identifier
SAGA
Sand & Gravel Association (Now Part of QPA)
SAGs
Scientific Advisory Groups
SAIX
South African Internet Exchange
SALI
Science and Life Issues (University of California)
SAM
Systems Assurance Manager
SAMFU
Self-Adjusting Military ****Up
SAMFUT
Situation Abnormal, More****ed Up Than Usual
SAP
Software Assurance Plan.
SAPC
Scottish Accident Prevention Council
SAPFU
Surpassing All Previous**** Ups
SAPS
Sulphate Ash. Phosphorous & Sulphur (oils)
SAR
1. Smart Ass Remark.
2. Some Assembly Required.
SARA
Short Range Automotive Radar Frequency Allocation
SARI
South Asia Regional Initiative
SAS
Swedish Automotive Suppliers
SASO
Saudi Arabian Standards Organisation
SAT
Site Acceptance Test.
SAW
Surface Acoustic Wave
SAX
Short Axis
SB
1. Senate Bill (USA).
2. Solomon Islands.
sb.
substantive
SBAC
Society of British Aerospace Companies
SBAs
Standard-Based Assesment
SBC
Sensotronic Brake Control
SBCN
Sitting Behindthe Computer, Naked
SBE-1
Starch branching enzyme-1
SBI
Subsidiary Body for Implementation
SBN
Stark Bollock Naked
SBPG
Standard Bus Procurement Guidelines
SBR
Social Behavioral Research
SBSTA
Subsidiary Body for Scientific and Technical Advice
SC
Seychelles
sc.
scilicet, understand or supply
Sc. Nat. Dict.
Scottish National Dictionary
Sc., Scot.
Scottish
SCA
Supplementary Credit Approval
SCAA
1. Shenandoah Conservatory Arts Academy.
2. South Carolina Academy of Audiology.
3. Student Center for Academic Achievement.
Scand.
(in titles) Scandinavia, -n
SCAS
Side Collision Aviodance Systems
Sch.
(in titles) School
SCIM
Scanning Ion-conductance microscopy
SCM
Supply Chain Management
SCMG
Specialist Car Manufacturers Group
SCNL
Standing Committee on Nuclear Liability
SCNR
Sorry, Could Not Resist
Scotl.
(in titles) Scotland
SCR
1. Selective Catalytic Reduction.
2. System Concept Review.
SCS
Senior Civil Service
SCU
Sensor Control Unit
SD
1. Sudan.
2. Semantically Different.
3. Structurally Deficient.
SDA
Service Delivery Agreement
SDARS
Satellite Digital Audio Receiver Service
SDI
1. Saugdiesel Direct Injection.
2. Standard Diesel Injection.
SDIHTT
Some Day Ill Have The Time
SDM
Sensor Diagnostic Module
SDN
Sudan
SE
1. Shared Explicit.
2. Sweden.
3. Search Engine.
SEA
1. Strategic Enviromental Assessment (directive 2001/42/EC).
2. southeast Asia.
SEC
SECond,eg.Waitasec
SED
Solvent Emissions Directive 1999/13/EC
SEI
Software Engineering Initiative.
Sel.
(in titles) Selection, -s
SELCHP
South East London CHP Plant
SEM
Search Engine Marketing
SEMA
Speciality Equipment Market Association
SEMPO
Search Engine Marketing Professional Organization
SEO
Search Engine Optimization
SEP
Somebody Elses Problem
SEPA
1. Swedish Environmental Protection Agency.
2. Scottish Environmental Protection Agency.
SEPG
Software Engineering Process Group.
SEPT
Standardized English Proficiency Test
SER
Sequence of Events Recorder
Ser.
Series
SERIES
Seismic Engineering Research Infrastructures for European Synergies
SERP
Search Engine Result Page
SERPAJ
Service for Peace and Justice
SERPLAN
South East Regional Planning Conference
SERT
Special European Registration for Trailers
SES
Search Engine Strategies
SET
Supplemental Emission Test
SETI
Search For Extra Terrestial Intelligence
SFAIRP
So Far As Is Reasonably Practicable (Concept intro by H&S Directive)
SFCSYSTEM
Structural Funds Communication system
SFLA
Stupid Four Letter Acronym
SFS
Finnish Standards Association
SG
Singapore
SGA
System Integration Group (EUCAR)
SGF
Swedish Gas Association
SGML
Standard Generalized Markup Language
SGTS
Scottish Gaelic Texts Society
SH
St. Helena
SHED
Sealed House Evaporative Determination
SHTS
Spit Hitting The Spam
SHTSI
Somebody Had To Say It
SI
1. Slovenia.
2. Supplemental Index.
3. Severity Index (E.G.Chest).
4. Statutory Instrument.
5. Spark Ignition.
SIAM
Society of Indian Automobile Manufacturers
SIBS
Shanghai Institutes for Biological Sciences
SIC
Standard Industry Classification (USA)
SICS
Sitting In Chair Snickering
SICTS
Society of Information Computer Technology Students
SID
Side Impact Dummy
SIG
Special Interest Group
SIGIR
Special Interest Group on Information Retrieval
SIIN
Stuffed If I Know!
SIL
1. Son In Law.
2. Sound Intensity Level.
SIMI
Society of the Irish Motor Industry
sing.
singular
SIP
1. Side Impact Protection.
2. State Implementation Plan (USA).
SIPROD
Simultaneous Production and Drilling
SIPS
Side Impact Protection System
SIS
1. Side Impact Simulation.
2. Swedish Standards Institute.
SIT
System / Integration Test.
SITA
Switching IP Through ATM
SITD
Still In The Dark
SITEV
International Exhibition for the Suppliers of the Vehicle Industry
SJ
Svalbard And Jan Mayen Islands
SK
Slovakia (Slovak Republic)
Sk.
(in titles) Sketch
SKBR
Sree Konaseema Bhanoji Ramars
Skr.
Sanskrit
SKS
Some Kind Soul
SL
Sierra Leone
SLA
Service Level Agreement
SLATFA
So Long, And Thanks For All The Fish
Slav.
Slavonic
SLE
Systemic Lupus Erythematosus
SLEM
Second Largest Eigenvalue Modulus
SLF
Substitue /Secondary Liquid Fuel
SLIP
Single Line In Protocol; Serial Line Internet Protocol
SLW
Seated Load Weight
SM
1. San Marino.
2. Success Magnet.
Sm3/d
Standard Cubic Meters per Day
SMAR
Suck My Ass Raw
SMART
1. Stop Motor Crime And Ring Today
2. ( SMarT ) - Support For Maritime Training
SMC
Sheet Moulding Composite
SMCs
Sperm Mother Cells
SMDP
Samarang Drilling Platform
SME
1. Small to Medium Enterprises.
2. Subject Matter Expert.
SMJT
Samarang Jacket Platform
SMM
Social Media Marketing
SMMT
Society of Motor Manufacturer and Traders
SMO
1. Serious Mode On.
2. Social Media Optimization.
SMOFF
Serious Mode OFF
SMOP
Small Matter Of Programming
SMP
Software Management Plan.
SMS
Short Message Service
SMTA
Scottish Motor Trade Association
SMTP
Simple Mail Transfer Protocol
SMX
Search Marketing Expo
SN
Senegal
SNAC
Sitting Naked At Computer
SNAFU
Situation Normal-All Fouled Up
SNERT
Snot-Nosed Egotistical Rude Teenager
SNFIAA
Still No fucking Idea At All
SNHA
Supreme National Hospital Authority
SNOP
Systematized Nomenclature of Pathology
SNP
single-nucleotide polymorphism
SNPA
Subnetwork Points of Attachment
SNPRM
Supplemental Notice of Proposed Rulemaking
SNR
Signal to Noise Ratio
SO
1. Significant Other.
2. Somalia.
3. Shipping Order.
4. Scotish Office.
SOC
Systems Operating Centre
Soc.
(in titles) Society
SOCA
Serious Organised Crime Agency (was NCIS)
Sociol.
(as label) in Sociology; (in titles) Sociology, - ical
SOE
1. Society of Operations Engineers.
2. Silly/ Stupid Operator Error.
SOFC
Solid Oxide Fuel Cell
SOI
Stink On Ice
SOL
Still Out of Luck
SONET
Synchronous Optical Network
SOP
1. Standing Operational Procedures.
2. Standard Operating Procedure.
3. Standard Operational Procedure.
4. Statement Of Principles.
SOPAC
Scripps Orbit and Permanent Array Center
SOR
Society of Rheology
SORL
Seat Orientation Reference Line
SORN
Statutory Off Road Notification
SoRU
Sociology of Risk and Uncertainty
SOS
1. Secretary Of State.
2. International Morseradio-codesignal for danger, life-death.
SOSO
Same Old, Same-Old
SOUR
Specific Oxygen Uptake Rate (Measured by Respirometry)
SOV
Subject, Object, Verb
SOVS
Some One Very Special
SP
1. Subject Phrase
2. ( Sp. ) - Spanish.
3. ( Sp. ) - (in titles) Speech, -es.
4. ( sp. ) - spelling
SPA
Special Protection Area
SPAD
Signal Passed at Danger
SPC
Statistical Process Control
Spec.
1. (in titles) Specimen
2. ( spec. ) - specifically
SPER
Steel Packaging Exported for Recovery Document
SPFC
Solid Polymer Fuel Cell
SPH
Smoothed Particle Hydrodynamics
SPHE
Social, Personal and Health Education
SPI
1. Springfield Illinois Airport. Springfield, Illinois. USA Abraham Lincoln Capital Airport.
2. Single Point Injection.
3. Spark Plug Injector.
SPU
Surge Power Unit
SPV
Special Purpose Vehicle
SQ
Software Quality
SQA
1. Supplier Quality Assurance (or Assistance).
2. Software Quality Assurance.
SR
Suriname
SR 2000
Spending Review 2000
SR 2002
Spending Review 2002
SRA
Strategic Rail Authority
SRM
1. Supplier Relationship Management.
2. Specified Risk Material.
SRPP
Self-Reinforced Polypropylene
SRTM
Software Requirements Traceability Matrix.
SRV
Sports Recreational Vehicle
SRY
Sex determination region of Y chromosome
SS
1. Sold Secure.
2. Suspended Solids.
sSA
sub-Saharan Africa
SSAA
Sub-Saharan Africa and Asia
SSAFE
Safe Supply of Affordable Food for Everyone Everywhere
SSBTC
1. Schweizerischer Staffordshire Bull Terrier Club.
2. State Street Bank and Trust Company.
SSCD
Speed Self Control Device
SSCR
Society for the Study of Chinese Religions (Harvard University)
SSE
Search Submit Express
SSHSS
Social Science and Humanities Student Society
SSIA
Subject Says It All
SSN
Special Social Needs Vehicle
SSP
1. Software Safety Plan.
2. Search Submit Pro.
3. Software Safety Review.
SSRB
Bryant Space Science Center
SSSI
Site of Special Scientific Interest
SSTH
Semantic Script Theory of Humour
SSV
1. Sub-Sonic Venturi.
2. Surface Safety Valve.
ST
Sao Tome And Principe
ST-DS9
Star Trek, Deep Space 9
ST-TNG
Star Trek, The Next Generation
ST-TOS
Star Trek, The Original Series
ST-VOY
Star Trek, Voyager
St.
Saint
STAG
School Travel Advisory Group
STAIRS
Standardisation of Accident and Injury Registration Systems
Stand.
Standard
Stanf.
(quoted from) Stanford Dictionary of Anglicised Words & Phrases
STATUS
Manchester Metropolitan Unicersity
STBY
Sucks To Be You
STC
Stability and Traction Control
STDP
Space Technologies Development Program (Canada)
STEM
1. Science, Technology, Engineering and Mathematics.
2. Swedish National Energy Administration.
STEPPS
Science, Technology, Environment and Public Policy Specialization
STET
Surface Transport Emission Trading
STFU
Shut The fuck Up
STFW
Search The Friendly Web
STGO
Special Type General Order
STI/ST
Star Trek, first movie/The Motion Picture
STII
Internet Stream Protocol version II
STII/S
Star Trek, second movie/Wrath Of Khan
STIII/
Star Trek, third movie/ Search For Spock
STIV/S
Star Trek, fourth movie / The Voyage Home
STM
1. Surface Treatment of Metals (bref).
2. Scanning tunneling microscope.
str.
strong
STRO
Scandinavian Tyre & Rim Organisation
Struct.
(in titles) Structure, -al
STS
1. So To Speak.
2. Science, Technology and Society.
3. Serologic tests for syphilis.
4. Surface Treatment Using Solvents (bref).
STSE
Science, Technology, Society, Environment education
STTR
Small Business Technology Transfer
STU
Separate Technical Unit
Stud.
(in titles) Studies
STV/ST
Star Trek, fifth movie / The Final Frontier
STVI/S
Star Trek, sixth movie / The Undiscovered Country
STWB
South Texas Wintering Birds
SU
Soviet Union
subj.
subject
subord. cl.
subordinate clause
subseq.
subsequent, -ly
subst.
substantively
SUCDIC
Situation Under Control, Dickheads In Charge
SuDS
Sustainable Drainage System
SUE
Successful Users of English
suff.
suffix
SUFID
Screwing Up Face In Disgust
SULEV
Super Ultra Low Emissions Vehicle
SUNOIL
Shut Up, No One Is Listening To You
SUO
Standard Upper Ontology
superl.
superlative
Suppl.
Supplement
Surg.
(as label) in Surgery; (in titles) Surgery, Surgical
SUSFU
Situation Unchanged, Still fucked Up
SUT
System Under Test.
SUTI
Single Uniform Type Inspection
SUYP
Shut Up You Pervert
SV
El Salvador
SVHC
Substance of Very High Concern
SVM
Small Volume Motor Vehicle Manufacturer
SW
1. Soft Ware.
2. So What?.
3. Says Whom?.
4. Star Wars.
5. South West.
SW-SE
Star Wars Special Edition
Sw.
Swedish
SWAK
Sealed With A Kiss
SWALK
Sealed With A Loving Kiss
SWDYRT
Since When Do You Rule The Web?
SWERF
Solid Waste & Energy Recycling Facility (Gasification)
SWILAC
1. She Whom I Love And Cherish.
2. She Who Is Loving And Caring.
SWL
1. Short Wave Listener.
2. Site Wide Link.
SWMBO
She Who Must Be Obeyed
SWOV
Institute For Road Safety Research (Holland)
SWR
Special Waste Regulations
SWT
Sidewall Torsion Sensor
SWTSMB
She Who Thinks She Must Be Obeyed
SWUV
Safety of Wheelchair Users in Vehicles
SWYP
So Whats Your Problem?
SY
Syrian Arab Republic
Syd. Soc. Lex.
Sydenham Society, Lexicon of Medicine & Allied Sciences
syll.
syllable
Syr.
Syrian
SYSOP
SYStem OPerator
Syst.
(in titles) System, -atic
SYT
Sweet Young Thing
SZ
Swaziland

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