being one of nine equal parts.
a ninth part, especially of one (1 / 9 ).
the ninth member of a series.
5. Music. a.
a tone distant from another tone by an interval of an octave and a second.
the interval between such tones.
harmonic combination of such tones.
Origin: before 900; Middle English ninthe Related forms
), replacing Middle English niend
(Old English nigend
), neogethe, nigethe
(Old English nigotha
); akin to Old Saxon nigutho, Old Norse nīundi, Gothic niunda