thirty-eighth I. \| ̷ ̷ ̷ ̷| ̷ ̷\adjective 1.: being number 38 in a countable series < the thirty-eighth day > — see number table 2.: being one of 38 equal parts into which anything is divisible < a thirty-eighth share of the money > II. noun 1.: number 38 in a countable series 2.: the quotient of a unit divided by 38 : one of 38 equal parts of anything < one thirty-eighth of the total >