next after the eighth; being the ordinal number for nine.
being one of nine equal parts.


a ninth part, especially of one (1/9).
the ninth member of a series.
  1. a tone distant from another tone by an interval of an octave and a second.
  2. the interval between such tones.
  3. harmonic combination of such tones.


in the ninth place.

Origin of ninth

before 900; Middle English ninthe (see nine, -th2), replacing Middle English niend (Old English nigend), neogethe, nigethe (Old English nigotha); akin to Old Saxon nigutho, Old Norse nīundi, Gothic niunda
Related formsninth·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for ninth


Examples from the Web for ninth

Contemporary Examples of ninth

Historical Examples of ninth

  • The three regiments parading were the Eighth, Ninth and Twenty-fourth.


    Scian Dubh

  • Quoted by M. Pascal, in the ninth of his "Lettres Provinciales."

  • Mrs. Everat—her ninth child in eight years—in the grocery line.

    Night and Morning, Complete

    Edward Bulwer-Lytton

  • It was on my ninth birthday—but I don't believe you could write a better one now.

    It Happened in Egypt

    C. N. Williamson

  • Let her read Timothy chapter two, ninth to fifteenth verses.'

    Micah Clarke

    Arthur Conan Doyle

British Dictionary definitions for ninth



(usually prenominal)
  1. coming after the eighth in counting order, position, time, etc; being the ordinal number of nine. Often written: 9th
  2. (as noun)he came on the ninth; ninth in line


  1. one of nine equal or nearly equal parts of an object, quantity, measurement, etc
  2. (as modifier)a ninth part
the fraction equal to one divided by nine (1/9)
  1. an interval of one octave plus a second
  2. one of two notes constituting such an interval
  3. See ninth chord


Also: ninthly after the eighth person, position, event, etc

sentence connector

Also: ninthly as the ninth point: linking what follows to the previous statement

Word Origin for ninth

Old English nigotha; related to Old High German niunto, Old Norse nīundi
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 ninth

c.1300, modification (by influence of nine) of nigonðe, from Old English nigoða, nigend.

Online Etymology Dictionary, © 2010 Douglas Harper