Nine"ti*eth (?), a.
1.
Next in order after the eighty-ninth.
2.
Constituting or being one of ninety equal parts.
© Webster 1913.
Nine"ti*eth, n.
1.
The quotient of a unit divided by ninety; one of ninety equal parts of anything.
2.
The next in order after the eighty-ninth.
© Webster 1913.