/əˈnʌl ||; əˈnʌl/verb [T] (present participle annulling;past tense past participle annulled) (usually passive 通常用于被动语态) to state officially that sth is no longer legally valid or recognized 废除；宣布…无效: Their marriage was annulled after just six months. 他们的婚姻仅过了六个月就被宣布无效。 ➔annulment noun [C] [U]