I. | ̷ ̷ ̷ ̷| ̷ ̷ adjective
1. : being number 53 in a countable series
the fifty-third day
— see number table
2. : being one of 53 equal parts into which something is divisible
a fifty-third share of the money
II. noun
1. : number 53 in a countable series
2. : the quotient of a unit divided by 53 : one of 53 equal parts of something
one fifty-third of the total