1. ninety-ninth - Noun
2. ninety-ninth - Adjective
ninety-ninth
The ordinal form of the number ninety-nine, describing a person or thing in position number 99 of a sequence.
The answer appears on the ninety-ninth page of the book.
She finished ninety-ninth in the race.
ninety-ninth (plural ninety-ninths)
One of ninety-nine equal parts of a whole.
A ninety-ninth of 1980 is 20.