S is the nineteenth letter of the English alphabet. S may also refer to:

History

* an

Anglo-Saxon charter Anglo-Saxon charters are documents from the History of Anglo-Saxon England, early medieval period in England which typically made a grant of Real Estate, land or recorded a Privilege (legal ethics), privilege. The earliest surviving charters were ...

's number in Peter Sawyer's, catalogue

Language and linguistics

Long s The long s, , also known as the medial ''s'' or initial ''s'', is an Archaism, archaic form of the lowercase letter , found mostly in works from the late 8th to early 19th centuries. It replaced one or both of the letters ''s'' in a double-''s ...

(ſ), a form of the lower-case letter s formerly used where "s" occurred in the middle or at the beginning of a word * -s, a suffix added to some English surnames, originally meaning "son of" * , the

International Phonetic Alphabet The International Phonetic Alphabet (IPA) is an alphabetic system of phonetic notation based primarily on the Latin script. It was devised by the International Phonetic Association in the late 19th century as a standard written representation ...

symbol for a voiceless alveolar sibilant sound * S, the subject of an intransitive verb * Ѕ, the Cyrillic letter Dze * Տ, the Armenian letter tyun * Ⴝ, the Georgian Asomtavruli letter ch'ari

Transportation

* S (New York City Subway service), one of the three services: ** Franklin Avenue Shuttle ** 42nd Street Shuttle (also called the Grand Central/Times Square Shuttle) (internally referred to as the 0) ** Rockaway Park Shuttle (also called Rockaway Shuttle) (internally referred to as the H) * Toei Shinjuku Line, a subway service operated by the Tokyo Metropolitan Bureau of Transportation (Toei), labeled Toei Shinjuku line symbol

* Sennichimae Line, a subway service operated by the Osaka Metro, labeled Osaka Metro Sennichimae line symbol

, the official West Japan Railway Company service symbol for the Kansai Airport Line.

Mathematics and logic

Integral symbol The integral symbol (''see below'') is used to denote integrals and Antiderivative, antiderivatives in mathematics, especially in calculus. History The notation was introduced by the Germany, German mathematician Gottfried Wilhelm Leibniz i ...

(∫), used in mathematics to denote integrals and antiderivatives * S combinator in combinatory logic *

Sphere A sphere (from Ancient Greek, Greek , ) is a surface (mathematics), surface analogous to the circle, a curve. In solid geometry, a sphere is the Locus (mathematics), set of points that are all at the same distance from a given point in three ...

* S (set theory), an axiomatic set theory * ''s(n)'', the aliquot sum of an integer n

Physics and chemistry

Sulfur Sulfur ( American spelling and the preferred IUPAC name) or sulphur ( Commonwealth spelling) is a chemical element; it has symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms ...

, symbol S, a chemical element * s, for second, the SI unit of time * S, the symbol for

entropy Entropy is a scientific concept, most commonly associated with states of disorder, randomness, or uncertainty. The term and the concept are used in diverse fields, from classical thermodynamics, where it was first recognized, to the micros ...

* S, a non-SI unit used to designate molecule size named after the

Svedberg In chemistry, a Svedberg unit or svedberg (symbol S, sometimes Sv) is a non- SI metric unit for sedimentation coefficients. The Svedberg unit offers a measure of a particle's size indirectly based on its sedimentation rate under acceleration ...

sedimentation coefficient * ''S'', a label that denotes one of two chiral center configurations in the ''R''/''S'' system * ''s'', one of the

Mandelstam variables In theoretical physics, the Mandelstam variables are numerical quantities that encode the energy Energy () is the physical quantity, quantitative physical property, property that is transferred to a physical body, body or to a physical ...

, the square of the invariant mass *

Siemens (unit) The siemens (symbol: S) is the unit of electric conductance, electric susceptance, and electric admittance in the International System of Units (SI). Conductance, susceptance, and admittance are the reciprocals of resistance, reactance, an ...

, the SI derived unit of electric conductance * S-block of the periodic table, which includes alkali metals, alkaline earth metals, and hydrogen and helium *

Spin (physics) Spin is an Intrinsic and extrinsic properties, intrinsic form of angular momentum carried by elementary particles, and thus by List of particles#Composite particles, composite particles such as hadrons, atomic nucleus, atomic nuclei, and atoms. S ...

* s, an abbreviation for

solid Solid is a state of matter where molecules are closely packed and can not slide past each other. Solids resist compression, expansion, or external forces that would alter its shape, with the degree to which they are resisted dependent upon the ...

Biology and medicine

* Serine, a standard amino acid abbreviated as Ser or S * ATC code S ''Sensory organs'', a section of the Anatomical Therapeutic Chemical Classification System * S phase or synthesis phase, a period in the cell cycle during interphase

Computing

* Samsung Galaxy S (2010 smartphone), the first flagship smartphone of the Samsung Galaxy S series *

S (programming language) S is a statistical programming language developed primarily by John Chambers (statistician), John Chambers and (in earlier versions) Rick Becker, Trevor Hastie, William S. Cleveland, William Cleveland and Allan Wilks of Bell Labs, Bell Laboratorie ...

, an environment for statistical computing and graphics * <s>, the opening tag for the

HTML element An HTML element is a type of HTML (HyperText Markup Language) document component, one of several types of HTML nodes (there are also text nodes, comment nodes and others). The first used version of HTML was written by Tim Berners-Lee in 199 ...

denoting information that is "no longer accurate or no longer relevant", usually rendered as ~~strike-through text~~

People

* ''S'', the pen name of Percy Bysshe Shelley * "S.", the nickname for Solomon Shereshevsky (1886-1958), a Russian journalist, mnemonist, and synesthete notable for his unusual memory abilities

Arts and entertainment

Books

* ''S.'' (Dorst novel), written by Doug Dorst based on story by J.J. Abrams * ''S.'' (Updike novel), part of the Scarlet Letter trilogy by John Updike * ''S'' (novel series), a 2005-2006 light novel series * '' "S" Is for Silence'', the nineteenth novel in Sue Grafton's "Alphabet mystery" series, published in 2005

Music

* S, the stage name of singer-songwriter and guitarist Jenn Champion * S (group), a short-lived South Korean music group active in 2003 and 2014 * ''S'' (EP), a 2001 EP by Japanese musical duo NaNa * Numbering of Franz Liszt's works according to Humphrey Searle's catalogue * "S" (song), by Japanese band Sid

Television

*S, the production code for the 1965 ''Doctor Who'' serial '' The Time Meddler'' *The S logo used for Globo’s weekly movie program ''SuperCine''.

Comics

* S, the protagonist of '' Heavy Liquid''

Automobiles

Production models

* Aion S, a Chinese electric compact executive sedan * Jaguar S-Type (1963), a British sports saloon * Jaguar S-Type (1999), a British executive saloon * Mercedes-Benz S-Class, a German full-size luxury car series * Mini Cooper S, a British hot hatch * Neta S, a Chinese electric sedan * Tesla Model S, an American electric executive sedan

Prototypes and concepts

* Sony Vision-S, a Japanese mid-size electric concept sedan

Series and trims

* Acura Type-S, a range of Japanese performance vehicles * Audi S, a range of German performance vehicles * Honda S series, series of Japanese sports cars * Jaguar S, a range of British performance vehicles * Saviem S, a range of French medium-duty cab-over trucks

Other uses

* S by Shakira, the first woman's fragrance by Colombian singer songwriter Shakira *

Safety (gridiron football position) Safety (S), historically known as a safetyman, is a position in gridiron football on the American football positions#Defense, defense. The safeties are defensive backs who line up ten to fifteen yards from the line of scrimmage. There are two var ...

* South on a map or compass, one of the four cardinal directions * s, the SI symbol for second * Shilling (British coin) * Old Israeli Shekel, denominated as S * S postcode area, a postcode area including Sheffield, England * A party label for the

Swedish Social Democratic Party The Swedish Social Democratic Party, formally the Swedish Social Democratic Workers' Party ( , S or SAP), usually referred to as The Social Democrats ( ), is a social democratic political party in Sweden. The party is member of the Progressiv ...

Strike (baseball) In baseball, the strike zone is the area of space through which a Pitch (baseball), pitch must pass in order to be called a strike even if the batter does not swing. The strike zone is defined as the volume of space above Baseball field#Home bas ...

* S band, a band of radio which ranges from 2 to 4 GHz * Sierra, the military time zone code for UTC−06:00 * Cool S, a graffiti sign