dissipate
verb [ I or T ] formal uk/ˈdɪs.ɪ.peɪt/ us/ˈdɪs.ə.peɪt/
（使）逐渐消失;（使）逐渐浪费掉
to (cause to) gradually disappear or waste
The heat gradually dissipates into the atmosphere. 热量逐渐消失在大气中。
His anger dissipated as the situation became clear. 随着局势的明朗，他渐渐消了气。