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1

eighty-first

adjective

Definition of eighty-first

1 :being number 81 in a countable series
  • the eighty-first day
— see Table of Numbers
2 :being one of 81 equal parts into which something is divisible
  • an eighty-first share of the money

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2

eighty-first

noun \ " \

Definition of eighty-first

1 :number 81 in a countable series
2 :the quotient of a unit divided by 81 :one of 81 equal parts of something
  • one eighty-first of the total

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