I. | ̷ ̷ ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷ adjective
1. : being number 77 in a countable series
the seventy-seventh day
— see number table
2. : being one of 77 equal parts into which something is divisible
a seventy-seventh share of the money
II. noun
1. : number 77 in a countable series
2. : the quotient of a unit divided by 77 : one of 77 equal parts of something
one seventy-seventh of the total