- Following the eight and preceding the tenth; coming after
eight others. - Constituting or being one of nine equal parts into which
anything is divided.
2 . Ninth
[ n.]
- The quotient of one divided by nine; one of nine equal parts
of a thing; the next after the eighth. - An interval containing an octave and a second. - A chord of the dominant seventh with the ninth added.
Meaning of 'ninth' (Princeton's WordNet)
1 . ninth
[ n]
Meaning (1): - position nine in a countable series of things