fidei commissum
noun | \ ˈfī-dē-ˌā-kə-ˈmi-səm, ˈfē-dā-ˌē-kȯ-ˈmē-su̇m \ | fi·dei com·mis·sum
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: a gift (as by will) of property in which a person is invested with title and which the person is directed to convey to another person or to make a particular disposition of — compare substitution
Note: Fidei commissa are prohibited by the Louisiana Civil Code.