dis ‧ si ‧ pate /ˈdɪsəpeɪt, ˈdɪsɪpeɪt/ BrE AmE verb formal
[ Date: 1400-1500 ; Language: Latin ; Origin: dissipare , from supare 'to throw' ]
1 . [intransitive and transitive] to gradually become less or weaker before disappearing completely, or to make something do this:
As he thought it over, his anger gradually dissipated.
Little by little, the smoke was dissipated by the breeze.
2 . [transitive] to waste something valuable such as time, money, or energy:
His savings were soon dissipated.