I. | ̷ ̷ ̷ ̷| ̷ ̷ adjective
1. : being number 89 in a countable series
the eighty-ninth day
— see number table
2. : being one of 89 equal parts into which something is divisible
an eighty-ninth share of the money
II. noun
1. : number 89 in a countable series
2. : the quotient of a unit divided by 89 : one of 89 equal parts of something
one eighty-ninth of the total