F2

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F2, F.II or similar may refer to:

Science and mathematics[edit]

  • F2, the chemical formula for fluorine
  • or GF(2), in mathematics, the Galois field of two elements
  • F2, a category in the Fujita scale of tornado intensity
  • F2 hybrid, a type of crossing in classical genetics
  • F2 layer, a stratum of the Earth's ionosphere
  • F-2 mycotoxin or zearalenone, a chemical produced by fungi
  • NIST-F2, an atomic clock

Medicine[edit]

Technology[edit]

Transportation[edit]

Aviation[edit]

Rail[edit]

Road[edit]

Military[edit]

Air[edit]

Sea[edit]

Land[edit]

Other uses[edit]

See also[edit]