01 a. The next in order after seventy-ninth.
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1.
The next in order after seventy-ninth.
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2.
Consisting of one of eighty equal parts or divisions.
Entry
3 senses · 2 variants
Webster, 1913
Eightieth
02 n. The quotient of a unit divided by eighty; one of eighty equal parts.
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1.
The quotient of a unit divided by eighty; one of eighty equal parts.