sixty-first

adjective

Definition of sixty-first

 (Entry 1 of 2)

1 : being number 61 in a countable series the sixty-first day — see Table of Numbers
2 : being one of 61 equal parts into which something is divisible a sixty-first share of the money

sixty-first

noun
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Definition of sixty-first (Entry 2 of 2)

1 : number 61 in a countable series
2 : the quotient of a unit divided by 61 : one of 61 equal parts of something one sixty-first of the total