eighty-first

Usage notes

English ordinal numbers may function as either an adjective or as a noun, and almost never appear in the plural.

Abbreviations

Noun

(plural eighty-firsts)

(fractional) One of eighty-one equal parts of a whole.
An eighty-first of 1620 is 20.

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"eighty-first." YourDictionary, n.d. Web. 21 January 2019. <https://www.yourdictionary.com/eighty-first>.

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eighty-first. (n.d.). Retrieved January 21st, 2019, from https://www.yourdictionary.com/eighty-first

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