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eighty-first

[ey-tee-furst] /ˈeɪ tiˈfɜrst/
adjective
1.
next after the eightieth; being the ordinal number for 81.
2.
being one of 81 equal parts.
noun
3.
an eighty-first part, especially of one (1/81).
4.
the eighty-first member of a series.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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13
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