/ˈækrənɪm ||; ˈækrənɪm/noun [C] an acronym (for sth) a short word that is made from the first letters of a group of words 首字母缩略语；头字语: TEFL is an acronym for Teaching English as a Foreign Language. TEFL 是 Teaching English as a Foreign Language 的首字母缩略语。