Definitions for: Eightieth

[n] position 80 in a countable series of things
[adj] the ordinal number of eighty in counting order

Webster (1913) Definition: Eight"i*eth, a. [From Eighty.]
1. The next in order after seventy-ninth.

2. Consisting of one of eighty equal parts or divisions.

Eight"i*eth, n.
The quotient of a unit divided by eighty; one of eighty equal
parts.

Synonyms: 80th, ordinal

See Also: rank