Mixed-member proportional representation
Mixed-member proportional representation (MMP or MMPR) is a type of representation provided by some mixed electoral systems which combine local winner-take-all elections with a compensatory tier with party lists, in a way that produces proportional representation overall. Like proportional representation, MMP is not a single system, but a principle and goal of several similar systems.
Source: Wikipedia — Mixed-member proportional representation (CC BY-SA 4.0)