dissipate /ˈdisipeit/ vi. & vt. 1.(使)消散，(使)消失：Clouds dissipate before wind. 云随风消散。 The sun dissipated the mist. 太阳驱散了雾。 2.浪费，挥霍：Don’t dissipate your efforts. 不要浪费你的精力。