vt.

1. 驱散（雾等），使消散；消除，使消失
   dissipate fear

   消除恐惧

2. 浪费，挥霍
   Don't dissipate your efforts.

   不要浪费自己的精力。

vi.

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

   警察一到现场，人群便四散离去。

2. 放荡；耽于游乐

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.