S (disambiguation)

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S is the nineteenth letter of the English alphabet.

S may also refer to:

Letter S[edit]

  • <s>, the deprecated HTML element "start tag" for strike-through text, now replaced by the <s> </s> pair
  • Shilling (British coin)
  • S band, a band of radio which ranges from 2 to 4 GHz
  • S-block of the periodic table, which includes alkali metals, alkaline earth metals, and hydrogen and helium
  • S combinator in combinatory logic
  • S postcode area, a postcode area including Sheffield, England
  • S (programming language), a statistical programming language
  • Long 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
  • Integral symbol (∫), used in mathematics to denote integrals and antiderivatives
  • "S", the nickname for Solomon Shereshevskii (1886-1958), Russian journalist known for an exceptional memory
  • South on a map, one of the 4 cardinal directions
  • Samsung Galaxy S, the first flagship smartphone of the Samsung Galaxy S series
  • s, name ending meaning "son of"
  • A party label for the Swedish Social Democratic Party
  • S, SpamScan, a service in QuakeNet's IRC services


  • S, the chemical symbol for the element Sulfur on the periodic table
  • S, the symbol for entropy
  • s, the SI symbol for second
  • s, the IPA symbol for a voiceless alveolar sibilant sound
  • S, the single argument of canonical intransitive verb
  • s, one of the Mandelstam variables, the square of the invariant mass
  • S, a non-SI unit used to designate molecule size named after the Svedberg sedimentation coefficient
  • S, a label that denotes one of two chiral center configurations in the R/S system
  • Serine, a standard amino acid abbreviation
  • ATC code S Sensory organs, a section of the Anatomical Therapeutic Chemical Classification System
  • Siemens (unit), the SI derived unit of electric conductance
  • S phase or synthesis phase, a period in the cell cycle during interphase
  • S can refer to Spin (physics)
  • S can refer to sphere
  • in mathematics s(n) is the aliquot sum of an integer n




  • S, the name that Jenn Ghetto, formerly of Carissa's Wierd, now performs under
  • S (group), a short-lived South Korean music group, active in 2003
  • S (EP), a 2001 EP by Japanese musical duo NaNa
  • Numbering of Franz Liszt's works according to Humphrey Searle's catalogue

See also[edit]