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English numbers (edit)
 ←  8 9 10  → 
    Cardinal: nine
    Ordinal: ninth
    Latinate ordinal: nonary
    Adverbial: nine times
    Multiplier: ninefold
    Latinate multiplier: nonuple
    Collective: ninesome
    Multiuse collective: nonuplet
    Greek or Latinate collective: ennead, nonad
    Greek collective prefix: ennea-
    Latinate collective prefix: nona-
    Fractional: ninth
    Elemental: nonuplet
    Greek prefix: enato-
    Number of musicians: nonet
    Number of years: novennium


From Middle English nynthe, nynte, from Old English niġoþa, from Proto-Germanic *newundô; the -n- was reinserted by analogy with nine.



ninth (not comparable)

  1. The ordinal form of the number nine.


  • 9th, IXth, (in names of monarchs and popes) IX



ninth (plural ninths)

  1. The person or thing in the ninth position.
  2. One of nine equal parts of a whole.
  3. (music) The compound interval between any tone and the tone represented on the ninth degree of the staff above it, as between one of the scale and two of the octave above; the octave of the second, consisting of 13 or 14 semitones (called minor and major ninth).



ninth (third-person singular simple present ninths, present participle ninthing, simple past and past participle ninthed)

  1. To lose a ninth.
    • 1973, Herakles on Thasos[1], page 79:
      οὐ[δ̓] ὲνατεὐεται, should be translated “a tithe (offering or fee) is not given (or paid)”, “no tithing” (literally, “a ninth is not given”, “no ninth-ing”, if I may coin such a word).
    • 2010, Religion and Reconciliation in Greek Cities: The Sacred Laws of Selinus and Cyrene[2], page 161:
      A yearling "is ninthed" for Semele on Myconos (LSCG 96.23–24); the victim "is not ninthed" for Heracles Thasios
  2. To divide by nine.
    • 2014, Contributions to Survey Sampling and Applied Statistics: Papers in Honor of H.O Hartley[3]:
      THE NINTHER-MEAN COMBINATION When data are only a little worse than usual, so far as wild and straggling values are concerned, we can do well enough by taking means of the results of ninthing.

Derived terms[edit]