/ˌdi:ˈfju:z ||; diˈfjuz/verb[T] 1 to remove part of a bomb so that it cannot explode 拆除（炸弹的）信管: Army experts defused the bomb safely. 军队专家安妥地拆去了那炸弹的引信。
2 to make a situation calmer or less dangerous 缓和；平息: She defused the tension by changing the subject. 她改变话题，缓和了紧张的气氛。