What does "eleventh" mean?

Eleventh: Constituting one of eleven parts into which a thing is divided; as, the eleventh part of a thing.

Additional senses

  1. 2.(Mus.) Of or pertaining to the interval of the octave and the fourth.
  2. 3.The quotient of a unit divided by eleven; one of eleven equal parts.
  3. 4.(Mus.) The interval consisting of ten conjunct degrees; the interval made up of an octave and a fourth.

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