A movement characterized by the rapid multiplication of disciples making disciples, which generally leads to the planting of new churches.  DMM is a branch of church planting that places more emphasis on disciple-making than on the mechanics of starting an individual church.

"A disciple-making movement exists when churches plant multiple churches (within a few short years), through gospel activity, that has abundant fruit among the lost, that multiplies these disciples (people growing in obedience to all of Jesus’ commands), who in turn replicate themselves in others, so that we can see at least four generations regularly produced in multiple streams of disciple-making activity and these streams multiply consistently into churches." (Exponential)