Is Christianity A Metanarrative?

Is Christianity A Metanarrative? According to the myth, Christianity is a Lyotardian metanarrative. Since a position of scepticism towards metanarratives is representative of postmodern thinking, the Christian faith would correspondingly have to behave antithetically towards Postmodernism. What is an example of a metanarrative? Plate tectonics, evolution by means of natural selection, steady-state equilibrium, and balance-of-nature