• The Twelfth Amendment to the United States Constitution
  Twelfth Amendment to the United States Constitution
  The Twelfth Amendment to the United States Constitution provides the procedure for electing the President and Vice President. It replaced Article II, Section 1, Clause 3, which provided the original procedure by which the Electoral College functioned. Problems with the original procedure arose in...
  
  .
• The Twelfth
  The Twelfth
  The Twelfth is a yearly Protestant celebration held on 12 July. It originated in Ireland during the 18th century. It celebrates the Glorious Revolution and victory of Protestant king William of Orange over Catholic king James II at the Battle of the Boyne...
  
  , a Protestant celebration originating in Ireland.

• 12th, an ordinal number
  Ordinal number (linguistics)
  In linguistics, ordinal numbers are the words representing the rank of a number with respect to some order, in particular order or position . Its use may refer to size, importance, chronology, etc...
  
  ; 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
  Note
  In music, the term note has two primary meanings:#A sign used in musical notation to represent the relative duration and pitch of a sound;#A pitched sound itself....
  
   twelve scale degrees from the root
  Root (chord)
  In music theory, the root of a chord is the note or pitch upon which a triadic chord is built. For example, the root of the major triad C-E-G is C....
  
   (current note, in a chord).
  • The interval (music)
    Interval (music)
    In music theory, an interval is a combination of two notes, or the ratio between their frequencies. Two-note combinations are also called dyads...
    
     (that is, gap) between the root and the twelfth note: a compound fifth.