mmp

(politics) Initialism of mixed-member proportional. [A voting system used in Germany and New Zealand in which voters get two votes, one for a local representative MP and one for a political party, and in which the number of seats that a party gets in parliament is based on the percentage of votes that the party receives.]

(online gaming) Initialism of massive multiplayer.

(biochemistry) Initialism of matrix metalloproteinase. [Any metalloproteinase that is a calcium-dependent zinc-containing endopeptidase.]

(Internet marketing) Initialism of mobile measurement partner.

(legal system) Initialism of mandatory minimum penalty.