IPA: /ˌdɪsɪˈpeɪʃən/
KK: /dɪsəˈpeɪʃən/
The act of wasting or squandering something, often referring to energy or resources, or indulging excessively in pleasures.
The dissipation of his wealth left him with nothing after years of extravagant spending.
Dissipation → It is formed from "dis-" (meaning apart) and "sippare" (from Latin, meaning to throw away or scatter). The word "dissipation" refers to the act of scattering or wasting away, often in the context of energy or resources.
Think of something being 'thrown apart' ('dis-') and 'scattered' ('sippare') — that's why dissipation means wasting or scattering away.