eighty-fifth I. \| ̷ ̷ ̷ ̷| ̷ ̷\adjective 1.: being number 85 in a countable series < the eighty-fifth day > — see number table 2.: being one of 85 equal parts in which something is divisible < an eighty-fifth share of the money > II. noun 1.: number 85 in a countable series 2.: the quotient of a unit divided by 85 : one of 85 equal parts of something < one eighty-fifth of the total >