POSTPRANDIAL Meaning of POSTPRANDIAL in English ■ adjective1》 formal or humorous during or relating to the period after a meal. 2》 Medicine occurring after a meal.OriginC19: from post- + L. prandium 'a meal' + -al . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004