I. | ̷ ̷ ̷ ̷| ̷ ̷ adjective
1. : being number 39 in a countable series
the thirty-ninth day
— see number table
2. : being one of 39 equal parts into which anything is divisible
a thirty-ninth share of the money
II. noun
1. : number 39 in a countable series
2. : the quotient of a unit divided by 39 : one of 39 equal parts of anything
one thirty-ninth of the total