A partial or incomplete assignment; a transfer or designation that is only partial or conditional.
From demi- (half, partial) + assignation (assignment, allotment). Emerged in legal and administrative contexts where transfers were not absolute but limited.
In medieval law, a 'demiassignation' was when a lord granted you land only partially—maybe the crops but not the mineral rights, or the right to farm it but not to build on it, creating an intricate hierarchy of partial ownership.
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