adj the next in order after seventy-ninth.
2. eightieth ·adj consisting of one of eighty equal parts or divisions.
3. eightieth ·noun the quotient of a unit divided by eighty; one of eighty equal parts.
adj the next in order after seventy-ninth.
2. eightieth ·adj consisting of one of eighty equal parts or divisions.
3. eightieth ·noun the quotient of a unit divided by eighty; one of eighty equal parts.
Webster English vocab. Английский словарь Webster. 2012