The branch of theology that is concerned with the defense of Christian doctrines.
defense and proof of Christianity or other doctrine
Defense and proof, generally of Christianity; whole body of such writings.
Philosophical writings that attempt to refute attacks on the Christian faith. Apologists include Justin Martyr, Origen, St Augustine, Thomas Aquinas, Blaise Pascal, and Joseph Butler. The questions raised by scientific, historical, and archeological discoveries have widened the field of apologetics.