next after the eighteenth; being the ordinal number for 19.
being one of 19 equal parts.


a nineteenth part, especially of one (1/19).
the nineteenth member of a series.

Origin of nineteenth

before 900; Middle English nyntenthe (see nineteen, -th2); replacing nientethe, Old English nigonteotha; see nine, tithe Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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Contemporary Examples of nineteenth

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British Dictionary definitions for nineteenth



(usually prenominal)
  1. coming after the eighteenth in numbering or counting order, position, time, etc, being the ordinal number of nineteen. Often written: 19th
  2. (as noun)the nineteenth was rainy


  1. one of 19 approximately equal parts of something
  2. (as modifier)a nineteenth part
the fraction that is equal to one divided by 19 (1/19)
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

Word Origin and History for nineteenth

late 14c., nyntenthe; from nineteen + -th (1); a replacement or modification of nigonteoþa, from Old English nigon-teoða. Nineteenth hole "bar-room in a golf clubhouse" is attested from 1901.

Online Etymology Dictionary, © 2010 Douglas Harper