I. | ̷ ̷ ̷ ̷| ̷ ̷ adjective
1. : being number 58 in a countable series
the fifty-eighth day
— see number table
2. : being one of 58 equal parts into which something is divisible
a fifty-eighth share of the money
II. noun
1. : number 58 in a countable series
2. : the quotient of a unit divided by 58 : one of 58 equal parts of something
one fifty-eighth of the total