vt.

1. 驅散（霧等），使消散；消除，使消失
   dissipate fear

   消除恐懼

2. 浪費，揮霍
   Don't dissipate your efforts.

   不要浪費自己的精力。

vi.

1. 消散；消失
   The crowd soon dissipated when the police arrived.

   警察一到現場，人群便四散離去。

2. 放蕩；耽於遊樂

v.

1. be or cause to be dispelled or dispersed.
2. waste (money, energy, or resources).
3. Physics  cause (energy) to be lost through its conversion into heat.