Nine'ti-eth1, a.
a. 1. Next in order after the eighty-ninth.
Sense 2. Constituting or being one of ninety equal parts.
2 entries under this word
Ninetieth
Nīne'ti-eth2, n.
n. 1. The quotient of a unit divided by ninety; one of ninety equal parts.
Sense 2. The next in order after the eighty-ninth; the tenth after the eightieth.