Definition of dissipations:
(n) :
The act of dissipating or dispersing; a state of dispersion or separation; dispersion; waste.
(n) :
A dissolute course of life, in which health, money, etc., are squandered in pursuit of pleasure; profuseness in immoral indulgence, as late hours, riotous living, etc.; dissoluteness.
(n) :
(physics) A loss of energy, usually as heat, from a dynamic system.
(n) :
A trifle which wastes time or distracts attention.