Dictionary.com

thirteenth

[ thur-teenth ]
/ ˈθɜrˈtinθ /
Save This Word!

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.
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of thirteenth

before 900; thirteen + -th2; replacing Middle English thrittenthe (see three, tenth), Old English thryttēotha (see tithe)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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
FEEDBACK