Ø (definition of terms)

The symbol Ø or ø stands for:

• the letters Ø used in Danish, Norwegian and Faroese .
• the diameter symbol or average symbol (also "⌀" (U + 2300))
• the symbol of the empty set (actually "∅" (U + 2205))
• "None, none, none, not" (including in the medical field)
• the symbol of the mother tincture in homeopathy
• the rounded semi-closed front tongue vowel in the International Phonetic Alphabet
• a half diminished (seventh) chord for chord symbols in music
• Icelandic license plate for Keflavík Airport
• a project by the Finnish musician Mika Vainio

In some computer fonts and the character for the digit zero run with a slash in order to better distinguish the letter O to ensure. However, this does not go beyond the oval of zero.

This is a disambiguation page for differentiating between several terms identified with the same word.