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Entry 5 senses · 2 variants Webster, 1913

Thirteenth

/(thẽr"tēnth`)/ · Thir·teenth · IPA /ˌθɝˈtiːnθ/
01 a. Next in order after the twelfth; the third after the tenth; -- the ordinal of thirteen; as, the thirteenth day of the month.
  1. 1.
    Next in order after the twelfth; the third after the tenth; -- the ordinal of thirteen; as, the thirteenth day of the month.
  2. 2.
    Constituting or being one of thirteen equal parts into which anything is divided.
02 n. The quotient of a unit divided by thirteen; one of thirteen equal parts into which anything is divided.
  1. 1.
    The quotient of a unit divided by thirteen; one of thirteen equal parts into which anything is divided.
  2. 2.
    The next in order after the twelfth.
  3. 3.
    The interval comprising an octave and a sixth.(Mus.)