[ thur-teen ]
/ ˈθɜrˈtin /


a cardinal number, 10 plus 3.
a symbol for this number, as 13 or XIII.
a set of this many persons or things.


amounting to 13 in number.

Origin of thirteen

before 900; late Middle English thirttene, variant of Middle English thrittene, Old English thrēotēne; cognate with Dutch dertien, German dreizehn, Old Norse threttān. See three, -teen Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for thirteen

British Dictionary definitions for thirteen

/ (ˈθɜːˈtiːn) /


the cardinal number that is the sum of ten and three and is a prime numberSee also number (def. 1)
a numeral, 13, XIII, etc, representing this number
the amount or quantity that is three more than ten; baker's dozen
something represented by, representing, or consisting of 13 units


  1. amounting to thirteenthirteen buses
  2. (as pronoun)thirteen of them fell

Word Origin for thirteen

Old English threotēne; see three, -teen
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