- 1[intransitive, transitive] to gradually become or make something become weaker until it disappears Eventually, his anger dissipated. dissipate something Her laughter soon dissipated the tension in the air.
- 2[transitive] dissipate something to waste something, such as time or money, especially by not planning the best way of using it synonym squander
NAmE//ˈdɪsəˌpeɪt//(formal)Verb Forms present simple I / you / we / they dissipate
he / she / it dissipates
past simple dissipated
-ing form dissipating