An example of dissipate is when rain starts to let up or goes away.
His anger dissipated in time.
The dark clouds finally dissipated.
Origin of dissipate
- Middle English dissipaten from Latin dissipāre dissipāt-
From American Heritage Dictionary of the English Language, 5th Edition
- From Latin dissipatus, past participle of dissipare, also written dissupare (“to scatter, disperse, demolish, destroy, squander, dissipate”), from dis- (“apart”) + supare (“to throw”), also in comp. insipare (“to throw into”).