#1 dissipation n. breaking up and scattering by dispersion; "the dissipation of the mist". wn
#2 dissipation n. [profligacy, dissolution, licentiousness, looseness] dissolute indulgence in sensual pleasure. wn
#3 dissipation n. [waste, wastefulness] useless or profitless activity; using or expending or consuming thoughtlessly or carelessly; "if the effort brings no compensating gain it is a waste"; "mindless dissipation of natural resources". wn
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