Merriam-Webster Online Dictionary

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One entry found for dissipate.
Main Entry: dis·si·pate
Pronunciation: 'di-s&-"pAt
Function: verb
Inflected Form(s): -pat·ed; -pat·ing
Etymology: Latin dissipatus, past participle of dissipare, dissupare, from dis- + supare to throw
Date: 15th century
transitive verb
1 a : to break up and drive off (as a crowd) b : to cause to spread thin or scatter and gradually vanish <one's sympathy is eventually dissipated -- Andrew Feinberg> c : to lose (as heat or electricity) irrecoverably
2 : to spend or use up wastefully or foolishly <dissipated the family fortune in reckless business ventures>
intransitive verb
1 : to break up and scatter or vanish <the clouds soon dissipated> <the team's early momentum has dissipated>
2 : to be extravagant or dissolute in the pursuit of pleasure; especially : to drink to excess
synonym see SCATTER
- dis·si·pat·er noun