dissipation in WordNet English dictionary

1. dissolute indulgence in sensual pleasure
   profligacy  dissipation  dissolution  licentiousness  looseness 
   
2. 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"
   waste  wastefulness  dissipation 
   
3. breaking up and scattering by dispersion
   "the dissipation of the mist"
   dissipation