seventy-fifth I. \| ̷ ̷ ̷ ̷ ̷ ̷| ̷ ̷\adjective 1.: being number 75 in a countable series < the seventy-fifth day > — see number table 2.: being one of 75 equal parts into which something is divisible < a seventy-fifth share of the money > II. noun 1.: number 75 in a countable series 2.: the quotient of a unit divided by 75 : one of 75 equal parts of something < one seventy-fifth of the total >