dissipation (n.)youdaoicibaDictYouDict[dissipation 词源字典]
early 15c., "act of scattering," from Latin dissipationem (nominative dissipatio), noun of action from past participle stem of dissipare (see dissipate). Meaning "intemperate mode of living" is from 1784.[dissipation etymology, dissipation origin, 英语词源]