"Missional means actually doing mission right where you are. Missional means adopting the posture of a missionary, learning and adapting to the culture around you while remaining biblically sound. Think of it this way: missional means being a missionary without ever leaving your zip code
Establishing a missional church means that you plant a church that’s part of the culture you’re seeking to reach.
... learning about the components of the mission field around you, reaching at least some of them as effectively as you can, adapting your approaches while remaining faithful to the gospel—all of this is missional.
the goal of missional church planting is glorifying God, growing his kingdom, and developing healthy churches with new converts"
Ed Stetzer, Planting Missional Churches