1. fifty-third - Noun
2. fifty-third - Adjective
fifty-third
The ordinal form of the number fifty-three, describing a person or thing in position number 53 of a sequence.
The answer appears on the fifty-third page of the book.
She finished fifty-third in the race.
fifty-third (plural fifty-thirds)
One of fifty-three equal parts of a whole.
A fifty-third of 1060 is 20.
One of MOMA’s early homes was a five-story townhouse on Fifty-third Street. Source: Internet