"Dissipated" marital property involves monies or assets which have been wrongfully disposed of before the divorce trial. 

In Maryland, where one spouse uses marital property for his or her own benefit for a purpose unrelated to the marriage at a time when the marriage is undergoing an irreconcilable breakdown, the Court may find the property is "dissipated." 

If the Court finds dissipation, it can consider the dissipated property as marital property subject to equitable distribution.

The spouse claiming dissipation must establish a prima facie case [sufficient on its face] that marital monies were expended for other than a family purpose with the intention of reducing the funds available for equitable distribution (e.g. payment of living expenses for someone other than your spouse or children). The burden then shifts to the spouse who spent the money to show the expenditures were appropriate.