Webster's Revised Unabridged Dictionary · 1913

dissipate

dissipate (dis"si*pāt) , transitive verb

[Latin dissipatus, past participle of dissipare; dis- + an obsolete verb sipare, supare. to throw.]

1.
To scatter completely; to disperse and cause to disappear; -- used esp. of the dispersion of things that can never again be collected or restored.
Dissipated those foggy mists of error. — Selden
I soon dissipated his fears. — Cook
The extreme tendency of civilization is to dissipate all intellectual energy. — Hazlitt
2.
To destroy by wasteful extravagance or lavish use; to squander.
The vast wealth... was in three years dissipated. — Bp. Burnet

Dissipate , intransitive verb

1.
To separate into parts and disappear; to waste away; to scatter; to disperse; to vanish; as, a fog or cloud gradually dissipates before the rays or heat of the sun; the heat of a body dissipates.
2.
To be extravagant, wasteful, or dissolute in the pursuit of pleasure; to engage in dissipation.