[ nahynth ]
/ naɪnθ /


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 forms

ninth·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ninth

British Dictionary definitions for ninth

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