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Adjective: twelfth  twel(f)th
  1. Coming next after the eleventh and just before the thirteenth in position
    "For the twelfth time that day her heart turned chill within her";
    - 12th, dozenth
Noun: twelfth  twel(f)th
  1. Position 12 in a countable series of things
  2. One part in twelve equal parts
    - one-twelfth, twelfth part, duodecimal

Derived forms: twelfths

See also: ordinal

Type of: common fraction, rank, simple fraction, vulgar fraction [Brit]

Encyclopedia: Twelfth