fifty-ninth /ˌfɪfti ˈnaɪnθ/adjective 1noun 1forms 1 adjective1 •The ordinal form of the number fifty-nine, describing a person or thing in position number 59 of a sequence.The answer appears on the fifty-ninth page of the book.She finished fifty-ninth in the race. noun1 •One of fifty-nine equal parts of a whole.A fifty-ninth of 1180 is 20. formsfifty-ninths