See Also: ninetieth(dictionary)

ninetieth (iou)



ninetieth adjective & noun (ordinal numeral). OE.
[from NINETY + -TH2.]
A. adjective. Next in order after the eighty-ninth, that is number ninety in a series, (represented by 90th). OE.
b. noun.
The ninetieth person or thing of a category, series, etc., identified contextually. OE.
Each of ninety equal parts into which something is or may be divided, a fraction which when multiplied by ninety gives one. L20.
Comb.: Forming compound ordinal numerals with multiples of a hundred, as one-hundred-and-ninetieth (190th), two-thousand-and-ninetieth (2090th), etc., and (arch.) with numerals below ten, as three-and-ninetieth etc.