Definition of Liberation Theology
From the standpoint of its major concern, liberation theology does not ask what the church is, but what it means to be the church in a context of extreme poverty, social injustice and revolution. The emphasis is on praxis, not on abstract ecclesiological definitions. In the context of liberation theology the mission of the church seems to be more important than its nature.
Source: D.A. Carson, Biblical Interpretation and the Church : Text and Context, electronic ed. (Exeter: Paternoster Press, 2000, c1984). 174.