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thirteenth

[ thur-teenth ]
/ ˈθɜrˈtinθ /
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adjective
next after the twelfth; being the ordinal number for 13.
being one of 13 equal parts.
noun
a thirteenth part, especially of one (1/13).
the thirteenth member of a series.
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Origin of thirteenth

before 900; thirteen + -th2; replacing Middle English thrittenthe (see three, tenth), Old English thryttēotha (see tithe)
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How to use thirteenth in a sentence

British Dictionary definitions for thirteenth

thirteenth
/ (ˈθɜːˈtiːnθ) /

adjective
(usually prenominal)
  1. coming after the twelfth in numbering or counting order, position, time, etc; being the ordinal number of thirteen: often written 13th
  2. (as noun)Friday the thirteenth
noun
  1. one of 13 equal or nearly equal parts of something
  2. (as modifier)a thirteenth part
the fraction equal to one divided by 13 (1/13)
music
  1. an interval of one octave plus a sixthSee also interval (def. 5)
  2. short for thirteenth chord
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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