forty-ninth I. \| ̷ ̷ ̷ ̷| ̷ ̷\adjective 1.: being number 49 in a countable series < the forty-ninth day > — see number table 2.: being one of 49 equal parts into which something is divisible < a forty-ninth share of the money > II. noun 1.: number 49 in a countable series 2.: the quotient of a unit divided by 49 : one of 49 equal parts of something < one forty-ninth of the total >