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• noun
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• 12-step program (noun)
  1. RECOVERY PROGRAM
• 12-tone music (noun)
  1. and inverted or backward versions of the row a type of serial music introduced by Arnold Schoenberg; uses a tone row formed by the twelve semitones of the chromatic scale
• 12-tone system (noun)
  1. and inverted or backward versions of the row a type of serial music introduced by Arnold Schoenberg; uses a tone row formed by the twelve semitones of the chromatic scale
• February 12 (noun)
  1. the day on which President Abraham Lincoln is remembered
• K through 12
  1. in the US, the period of schooling from kindergarten through to grade 12 - the final year of high school
• October 12 (noun)
  1. a legal holiday commemorating the discovery of America by Christopher Columbus
• atomic number 12 (noun)
  1. as in magnesite and dolomite and carnallite and spinel and olivine a light silver-white ductile bivalent metallic element; in pure form it burns with brilliant white flame; occurs naturally only in combination
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