dis·si·pa·tion 
/ˌdɪsəˈpeɪʃən/ noun
plural dis·si·pa·tions /ˌdɪsəˈpeɪʃən/ noun formal 1 [noncount] : the process of slowly disappearing or becoming less
▪ Insulation helps prevent the dissipation of heat from houses in the winter. 2 [noncount] : the act of using all or a lot of money, time, etc., in a foolish way
▪ a movie about the dissipation of a famous heir's fortune ▪ the dissipation of resources 3 disapproving : behavior that shows you are interested only in pleasure, money, etc. [noncount] ▪ He lived a life of dissipation. [count] ▪ her gambling and dissipations
▪ Insulation helps prevent the dissipation of heat from houses in the winter.
▪ a movie about the dissipation of a famous heir's fortune ▪ the dissipation of resources
