Entry 3 senses · 2 variants Webster, 1913

Eightieth

/āt'-ē-ĭth/ · Eight·i·eth · IPA /ˈeɪ.ti.əθ/

01 a. The next in order after seventy-ninth.

1.
The next in order after seventy-ninth.
2.
Consisting of one of eighty equal parts or divisions.

02 n. The quotient of a unit divided by eighty; one of eighty equal parts.

1.
The quotient of a unit divided by eighty; one of eighty equal parts.