[ 'dɪsɪpeɪt ]
■ verb
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.
Derivatives
dissipative adjective
dissipator (also ~r ) noun
Origin
ME: from L. dissipat- , dissipare 'scatter'.