# S2

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> Source: https://en.wikipedia.org/wiki/S2
> Source revision: 1344099910
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

**S2** or **S II** may refer to:

## Science and technology

- [S2 (star)](/source/S2_(star)), a star in the Milky Way galaxy
- [S/2007 S 2](/source/S/2007_S_2), a natural satellite of Saturn
- [S2 impact](/source/S2_impact) (ie, "Spherules 2"), major impact of early Earth
- [S2 map projection](/source/S2_map_projection), a map projection created at Google
- [S2 steel](/source/S2_steel) (shock resisting steel)
- [S2: Keep out of the reach of children](/source/S2:_Keep_out_of_the_reach_of_children), a safety phrase in chemistry
- [Disulfur](/source/Disulfur) (S2), an allotrope of sulfur
- [Sulfide](/source/Sulfide) (S(2-)) anion

### Mathematics

- S2, the two-dimensional [n-sphere](/source/N-sphere)
- S2, the [permutation group](/source/Permutation_group) on two elements
- s2, the [variance](/source/Variance) of a variable

### Biology and medicine

- [British NVC community S2](/source/British_NVC_community_S2), a [swamps and tall-herb fens community in the British National Vegetation Classification system](/source/Swamps_and_tall-herb_fens_in_the_British_National_Vegetation_Classification_system)
- [Schneider 2 cells](/source/Schneider_2_cells), or S2 cells, a commonly used *Drosophila* cell line

- [Secondary somatosensory cortex](/source/Secondary_somatosensory_cortex), a brain area in the parietal cortex
- [Sacral spinal nerve 2](/source/Sacral_spinal_nerve_2), a spinal nerve of the sacral segment
- Schedule 2, an Australian legal category assigned to drugs; See [Standard for the Uniform Scheduling of Medicines and Poisons](/source/Standard_for_the_Uniform_Scheduling_of_Medicines_and_Poisons#Schedule_2_Pharmacy_Medicine)
- S2, the second [sacral vertebrae](/source/Sacral_vertebrae)
- [S2 (heart sound)](/source/S2_(heart_sound)), a sound in cardiac auscultation
- [ATC code S02](/source/ATC_code_S02) *Otologicals*, a subgroup of the Anatomical Therapeutic Chemical Classification System

### Computing

- [S2 (programming language)](/source/S2_(programming_language))
- [S2 Spreadsheet](/source/S2_Spreadsheet), by IBM in 1984

## Transportation

### Cars

- [AS S2](/source/AS_S1_and_AS_S2), a 1927 car manufactured in Poland
- [Audi S2](/source/Audi_S2), a turbo-charged sports car
- Lotus Elise S2, a [Lotus Elise](/source/Lotus_Elise#Series_2) production series of roadster automobile
- Porsche 944 S2, a 3l naturally aspirated [Porsche 944](/source/Porsche_944#944_S2) sports car

### Roads and bus routes

- [County Route S2 (California)](/source/County_Route_S2_(California))
- [Expressway S2 (Poland)](/source/Expressway_S2_(Poland)), a southern bypass of Warsaw
- [S2 National Highway](/source/S2_National_Highway), one of the [National Highways of Pakistan](/source/National_Highways_of_Pakistan)
- [S2 expressway (Shanghai)](/source/S2_expressway_(Shanghai)), an expressway in Shanghai also known as the *Hulu Expressway*
- S2, an abbreviation for a standard [single carriageway](/source/Single_carriageway) road, with a single lane going in each direction
- [Stagecoach Gold bus route S2](/source/Stagecoach_Gold_bus_route_S2), a bus route in Oxfordshire, England

### Aviation and space

- [Bangladesh](/source/Bangladesh) (aircraft registration code)
- [JetLite](/source/JetLite) (IATA airline code)
- [Focke-Wulf S 2](/source/Focke-Wulf_S_2), a 1928 German trainer aircraft
- [Grumman S-2 Tracker](/source/Grumman_S-2_Tracker), a 1952 United States Navy anti-submarine warfare (ASW) aircraft
- [SABCA S-2](/source/SABCA_S-2), a 1926 Belgian aircraft
- [Short S.2](/source/Short_S.2), a [Short Brothers](/source/Short_Brothers) aircraft
- [Strojnik S-2](/source/Strojnik_S-2), motorglider
- [S-II](/source/S-II) or S-2, the second stage of the Saturn V rocket

### Rail

#### Locomotives

- [Alco S-2](/source/Alco_S-2), a locomotive
- [Pennsylvania Railroad class S2](/source/Pennsylvania_Railroad_class_S2), a unique steam turbine locomotive
- [NER Class S2](/source/NER_Class_S2), a class of British steam locomotives

#### Passenger services

- [S2 (Berlin)](/source/S2_(Berlin)), an S-Bahn service
- [S2 (Dresden)](/source/S2_(Dresden)), an S-Bahn service
- [S2 (Munich)](/source/S2_(Munich)), an S-Bahn service
- [S2 (Nuremberg)](/source/S2_(Nuremberg)), an S-Bahn service
- [S2 (RER Vaud)](/source/S2_(RER_Vaud)), an S-Bahn service in Switzerland
- [S2 (Rhine-Main S-Bahn)](/source/S2_(Rhine-Main_S-Bahn)), an S-Bahn service
- [S2 (Rhine-Ruhr S-Bahn)](/source/S2_(Rhine-Ruhr_S-Bahn)), an S-Bahn service
- [S2 (St. Gallen S-Bahn)](/source/S2_(St._Gallen_S-Bahn)), an S-Bahn line in Switzerland
- [S2 (ZVV)](/source/S2_(ZVV)), a service of the Zurich S-Bahn in Switzerland
- S2, a [Breisgau S-Bahn](/source/Breisgau_S-Bahn) service in Germany
- S2, a planned [Bremen S-Bahn](/source/Bremen_S-Bahn) service in Germany
- S2, a [Carinthia S-Bahn](/source/Carinthia_S-Bahn) service in Austria
- S2, a [Chur S-Bahn](/source/Chur_S-Bahn) service in Switzerland
- S2, a [Hamburg S-Bahn](/source/Hamburg_S-Bahn) service in Germany
- S2, a [Hanover S-Bahn](/source/Hanover_S-Bahn) service in Germany
- S2, a [RheinNeckar S-Bahn](/source/RheinNeckar_S-Bahn) service in Germany
- S2, a [Rostock S-Bahn](/source/Rostock_S-Bahn) service in Germany
- S2, a [Salzburg S-Bahn](/source/Salzburg_S-Bahn) service in Austria
- S2, a [Stuttgart S-Bahn](/source/Stuttgart_S-Bahn) service in Germany
- S2, a [Stadtbahn Karlsruhe](/source/Stadtbahn_Karlsruhe) service in Germany
- S2, a [Tyrol S-Bahn](/source/Tyrol_S-Bahn) service in Austria and Italy (South Tyrol)
- S2, an [Upper Austria S-Bahn](/source/Upper_Austria_S-Bahn) service in Austria
- S2, a [Vienna S-Bahn](/source/Vienna_S-Bahn) service in Austria
- S2, a [Vorarlberg S-Bahn](/source/Vorarlberg_S-Bahn) service in Austria, Liechtenstein and Switzerland
- [Line S2 (BCR)](/source/Line_S2_(BCR)), a commuter rail service in Beijing, Chian
- [Line S2 (Milan suburban railway service)](/source/Line_S2_(Milan_suburban_railway_service)), Italy
- [Line S2 (Nanjing Metro)](/source/Line_S2_(Nanjing_Metro)), a suburban rapid transit line currently under construction in China
- [Line S2 (Wenzhou Rail Transit)](/source/Line_S2_(Wenzhou_Rail_Transit)), a suburban rapid transit line currently under construction in China
- [FGC line S2](/source/FGC_line_S2), a suburban train service in Barcelona Province, Spain

## Military

- [Soviet submarine *S-2*](/source/Soviet_submarine_S-2), a Soviet World War II submarine
- [Grumman S-2 Tracker](/source/Grumman_S-2_Tracker), a US Navy aircraft
- [Finnish torpedo boat *S2*](/source/Finnish_torpedo_boat_S2), which sank in 1925
- [USS *S-2* (SS-106)](/source/USS_S-2_(SS-106)), a US Navy submarine
- [Göta Signal Corps](/source/G%C3%B6ta_Signal_Corps) (designation S2), a 1944–1997 Swedish Army signal unit
- [S2 (missile)](/source/S2_(missile)), the first deployed French land-based strategic missile
- S-2, a military intelligence officer on the [staff](/source/Staff_(military)#Intelligence_/_security_/_information_operations_(2)) of a regiment or battalion
- [HMS *Rorqual* (S02)](/source/HMS_Rorqual_(S02)), a 1956 British Royal Navy *Porpoise*-class submarine
- [ORP S-2](/source/ORP_S-2), Polish World War II motor gun boat

## Organisations

- [S2 Records](/source/S2_Records), a subsidiary of Sony Music
- [S2 (TV channel)](/source/S2_(TV_channel)), a former Scottish television channel
- [S2 Games](/source/S2_Games), a video game developer
- [S2 Yachts](/source/S2_Yachts), a defunct sailboat-building company

## Products

- [Nintendo Switch 2](/source/Nintendo_Switch_2), a hybrid video game console
- [Samsung Galaxy S II](/source/Samsung_Galaxy_S_II), an Android smartphone
- [Samsung Gear S2](/source/Samsung_Gear_S2), a Tizen smartwatch
- [Samsung Galaxy Tab S2](/source/Samsung_Galaxy_Tab_S2), an Android tablet

### Cameras

- [Nikon S2](/source/Nikon_S2), a 35mm rangefinder camera produced between 1954 and 1958 as part of the Nikon S-mount range
- [Nikon 1 S2](/source/Nikon_1_S2), a digital mirrorless interchangeable lens camera
- [Canon PowerShot S2 IS](/source/Canon_PowerShot_S2_IS), a 2005 5.0 megapixel digital camera
- [FinePix S2 Pro](/source/FinePix_S2_Pro), a 2002 interchangeable lens digital single-lens reflex camera by Fuji
- [Leica S2](/source/Leica_S2), a 2009 37 million pixel medium format digital single-lens reflex camera

## Other uses

- [Seremban 2](/source/Seremban_2), a suburb of Seremban, located in Negeri Sembilan, Malaysia
- S2, a version of the racing simulation *[Live for Speed](/source/Live_for_Speed)*
- S2, a district of the [S postcode area](/source/S_postcode_area), covering areas of eastern Sheffield
- [Seattle Sounders FC 2](/source/Seattle_Sounders_FC_2), nicknamed S2
- [Second year](/source/Second_year), in the Scottish education system
- [S2 (classification)](/source/S2_(classification)), used for categorising swimmers based on their level of disability
- *[Silent Storm](/source/Silent_Storm)*, a 2003 video game also known as *S2: Silent Storm*
- *[Splatoon 2](/source/Splatoon_2)*, a 2017 video game for the Nintendo Switch
- [Pitts Special](/source/Pitts_Special), Two-Seat Aerobatics Biplane

## See also

- [2S (disambiguation)](/source/2S_(disambiguation))

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Adapted from the Wikipedia article [S2](https://en.wikipedia.org/wiki/S2) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/S2?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.