S is the nineteenth letter of the basic modern Latin alphabet. Semitic Šîn teeth represented a voiceless postalveolar fricative ʃ as in ship. Greek did not have this sound, so the Greek Sigma Σ came to represent s In Etruscan and Latin the s value was maintained, and only in modern languages has the letter been used to represent other sounds.The letter S is the seventh most common letter in English and the third-most common consonant after t and n. In English and many other languages, final S is the usual mark of plural nouns. It also usually indicates English third person present tense verbs

  • in metrology symbol for spat obsolete astronomical unit of distance
  • in computer science The S substitution combinator, defined as Sxyz = xz(yz)
  • in mathematics for topology sphere
  • in history for solidarity trade unions
  • S is for Switzerland
  • in project design stands for sets
  • S as in pista

wikipedia, Encyclopædia Britannica, cavitas-oris.com

stockphoto – monogram S