ninetieth
n. தொண்ணூறாமவர், தொண்ணூறாமது, தொண்ணூறில் ஒரு கூறு, (பெ.) தொண்ணூறாவது ஆள், தொண்ணூறில் ஒரு கூறு ஆன.
Nine"ti*eth, a. 1. Next in order after the eighty-ninth. 2. Constituting or being one of ninety equal parts. 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.