abbr. astr. lat.	Scorpius	Sco (the Scorpion, Скорпион)
		abbr.	scrop	scr.
		abbr. astr. lat.	Scutum	Sct (the Buckler, Щит)
		abbr.	Standardization Document	SD
		abbr.	Start Delimiter	SD
		abbr. cryptogr.	Self Decrypting Archive	SDA
		abbr. tech.	Source Data Automation	SDA
		abbr. comp.	SGML document interchange format	SDIF
		abbr. el.	Shrink DIP	SDIP
		abbr.	Scanning Desorption Molecule Microscopy	SDMM
		abbr.	Signal Distribution System	SDS
		abbr.	Start Data Traffic	SDT
		abbr. comp.	Sorry Don't Understand	SDU
		abbr.	seconds	sec.
		abbr.	seconds	secs.
		abbr. astr.	Students for the Exploration and Development of Space	SEDS
		abbr.	selected	sel.
		abbr.	Senegal	Sen.
		abbr. astr. lat.	Serpens	Ser (the Serpent, Змея)
		abbr. chem.	Serine aminoacid	Ser
		abbr. tech.	Signal-to-Error Ratio	SER
		abbr. comp.	Science and Engineering Research Council	SERC
		abbr. tech.	Single Ended Ranging Drum Shearer	SERDS
		abbr. phys.	Single Electron Tunnelling	SET
		abbr. astr.	Search for Extra-Terrestrial Intelligence	SETI
		abbr. astr. lat.	Sextant	Sex (Секстант)
		abbr. phys.	Surface EXAFS	SEXAFS
		abbr. geogr.	Seychelles	Sey.
		abbr.	Sub-File Directory	SFD
		abbr. comp.	Simple File Transfer Protocol	SFTP
		abbr. astr.	Southern Galaxy Catalogue	SGC
		abbr. astr. lat.	Sagitta	Sge (the Arrow, Стрела)
		abbr. astr. lat.	Sagittarius	Sgr (the Archer, Стрелец)
		abbr.	Synchronous Graphic RAM	SGRAM
		abbr. cryptogr.	Secure Hash Algorithm	SHA (see also MD5)
		abbr.	shares	shrs
		abbr.	SHUTdown Complete	SHUTC
		abbr.	SHUTDown	SHUTD
		abbr.	Single Instruction Multiple Data	SIMD (see also MMX)
		abbr. geogr.	Singapore	Sing.
		abbr. astr.	Space InfraRed Telescope Facility	SIRTF
		abbr.	Serial In, Serial Out	SISO
		abbr. ed.	Stockholm Institute of Transition Economics	SITE
		abbr.	Sweden Krona	SK
		abbr. geogr.	SK	Saskatchewan
		abbr.	sailed	sld.
		abbr.	Single-Launch Instruction Computer	SLIC
		abbr. geogr.	Slovenia	Slo.
		abbr. geogr.	Slovakia	Slov.
		abbr.	Source Language Program	SLP
		abbr.	System Length Register	SLR
		abbr.	Super-Large-Scale Integration	SLSI
		abbr.	Serial Line Unit	SLU
		abbr. astr.	Small Magellanic Cloud	SMC
		abbr. comp.	Storage Module Drive	SMD
		abbr. el.	Surface-Mountable Device	SMD
		abbr. tech.	Structural Moment Detector	SMD
		abbr. comp.	System Manager Interface Tool	SMIT
		abbr.	Short Message System	SMS
		abbr.	Source Measuring Units	SMU
		abbr.	Student Non-violent Coordinating Committee	SNCC
		abbr.	Sequence Number Field	SNF
		abbr. math.	Stabilized Normal Probability	SNP
		abbr. tech.	Sidewall Neutron Log	SNP
		abbr. comp.	Stack Overflow	SO
		abbr. el.	Small Outline package	SO
		abbr.	Small Outline DIMM	SODIMM
		abbr. el.	Single-Outline J package	SOJ
		abbr. geogr.	Solomon Islands	Sol. Is.
		abbr. geogr.	Somalia	Som.
		abbr. geogr.	Somersetshire	Soms.
		abbr. el.	Small Outline Package	SOP
		abbr. el.	Small Outline Transistor package	SOT
		abbr. tech.	System Operation Test	SOT
		abbr.	SOftware Updating Package	SOUP
		abbr.	sample	sp.
		abbr. comp.	SCSI-3 Primary Commands	SPC
		abbr.	Software Product Description	SPD
		abbr.	Standard Page Description Language	SPDL
		abbr. econ.	Standard & Poor's Depositary Receipts	SPDR
		abbr. phys.	Solid Phase Extraction	SPE
		abbr. tech.	Society of Petroleum Engineers	SPE
		abbr.	Staggered PGA	SPGA
		abbr. comp.	SPID	Service Profile Identifier
		abbr. tech.	Shuttle Program Information Management System	SPIMS
		abbr. comp.	Software Performance Monitor	SPM
		abbr. comp.	Scratch-Pad Memory	SPM
		abbr.	Standard Parallel Port	SPP
		abbr.	System Page Table	SPT
		abbr. comp.	SigmaPlot Worksheet	SPW
		abbr.	Society of Professional Well Log Analysts	SPWLA
		abbr. el.	Shrink QFP	SQFP
		abbr. el.	Small QFP	SQFP
		abbr.	Signal to Quantization Noise Ratio	SQNR
		abbr.	System Response Area	SRA
		abbr. econ.	Sears Roebuck Acceptance Corporation	SRAC
		abbr. comp.	Speech Recognition Application Program Interface	SRAPI
		abbr. geogr.	Sri Lanka	Sri L.
		abbr.	Short Request Packet	SRP
		abbr.	Supplemental Security Income	SSI

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