Look up twelfth in Wiktionary, the free dictionary.

Twelfth can mean:

• The Twelfth Amendment to the United States Constitution

In mathematics:

• 12th, an ordinal number; as in the item in an order twelve places from the beginning, following the eleventh and preceding the thirteenth.
• 1/12, a vulgar fraction, one part of a unit divided equally into twelve parts.

[ Music

• The note twelve scale degrees from the root (current note, in a chord).
  • The interval (music) (that is, gap) between the root and the twelfth note.
  • The chord (music) created by the root and the twelfth (note).

[ See also

• 12 (number)
• Eleventh
• Thirteenth

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