To scatter, disperse, or cause to break apart; to waste or use up excessively.
From Latin dissipatus, past participle of dissipare (to scatter, disperse). dis- means 'apart' and sipare means 'to throw or scatter.'
Fog dissipates in the morning sun, anger dissipates after you cool down, and heat dissipates from a computer—the word works for anything that scatters and disappears!
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