Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Illness & disabilityHRTHRT /ˌeɪtʃ ɑː ˈtiː $ -ɑːr-/ noun [uncountable] MI (hormone replacement therapy) treatment for women during and after the menopause, in which they are given hormones to replace those which they are lacking ldoceonline.com