FS, fS or fs may refer to:

Arts and entertainment

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Businesses and organizations

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Transportation

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Science and technology

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  • Feldspar, a group of silicate minerals
  • Fin-stabilized projectile, such as the APFSDS or HEAT-FS
  • Flank speed, a ship's true maximum speed
  • Frameshift mutation, a genetic mutation
  • Fujita scale (F-Scale), or Fujita-Pearson scale, a scale for rating tornado intensity
  • Full scale, in electronics and signal processing, the maximum amplitude a system can present
  • Marine flooding surface, a sharp contact between deep-water and shallow-water facies in sequence stratigraphy
  • Sampling rate (symbol  ), in communications theory
  • Fourier series, a mathematical tool used for analyzing periodic functions

Computing

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Medicine

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  • Felty's syndrome, autoimmune disease, with rheumatoid arthritis, enlargement of the spleen and too few neutrophils in the blood
  • Fibrin sealant, a type of surgical tissue adhesive used during surgery to control bleeding
  • Flight Surgeon, a physician who is responsible for the medical evaluation, certification and treatment of aviation personnel
  • Fractional shortening, of the heart
  • Formularium Slovenicum, Slovenian addendum to the European Pharmacopoeia

Physics

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Military

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  • Freight and supply ship (FS), a US Army classification for a type of cargo ship
  • Fire support, artillery or close air support for combat operations
  • Flight Sergeant, a non-commissioned officer in some air forces
  • Flight Surgeon, physician primarily responsible for the medical evaluation, certification and treatment of aviation personnel
  • French Ship (FS), a NATO prefix for ships of the French Navy

Sport

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  • Free safety, one variation of the defensive back position in American football
  • Free skating, the second part of a figure skating competition
  • Formula Student, a student engineering competition held annually in the UK

Other uses

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