Dictionary.com
definitions

ninety-ninth

[nahyn-tee-nahynth]
adjective
  1. next after the ninety-eighth; being the ordinal number for 99.
  2. being one of 99 equal parts.
noun
  1. a ninety-ninth part, especially of one (1/99).
  2. the ninety-ninth member of a series.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for ninety-ninth

Historical Examples of ninety-ninth

  • “Just arrived with a draft of a hundred men from the Hundred and Ninety-Ninth,” he added proudly.

    Cupid in Africa

    P. C. Wren

  • Every person owning real estate on the Island shall contribute one ninety-ninth part of his income to the said grab-bag.

  • I believe that's the nine hundred and ninety-ninth time I've answered that question this season.

  • In the last century, Fontenelle expired in his ninety-ninth year; Buffon in his eighty-first; Voltaire in his eighty-fourth.

  • With this addition, the One Hundred and Ninety-ninth would be full and able to leave within a week.

    Shoulder-Straps

    Henry Morford