Ø (disambiguation)

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Not to be confused with Ø (Disambiguation).

The letter Ø and the similar-looking symbol may refer to:



  • Ø is the solo identity of Finnish musician Mika Vainio of electronic music band Pan Sonic
  • Ø, Denmark, piece of land in Denmark meaning island
  • 0̸ or Slashed zero, a representation of the number 0 (zero) to distinguish it from the letter O
  • Empty set (\varnothing ) in mathematical set theory
  • Diameter, by the symbol
  • Half-diminished seventh chord, in music by the symbol ø
  • Plimsoll line (o), the line where the hull of a ship meets the surface of the water
  • Standard state (o), in chemistry
  • In German-speaking countries, Ø is also used as a symbol for average value: average in German is Durchschnitt, directly translated as cut-through.

See also[edit]