Exorcism
In Catholic Christianity, exorcisms are performed in the name of Jesus Christ. A distinction is made between a formal exorcism, which can only be conducted by a priest during a baptism or with the permission of a bishop, and "prayers of deliverance" which can be said by anyone.
The Catholic rite for a formal exorcism, called a "Major Exorcism", is given in Section 11 of the Rituale Romanum. The Ritual lists guidelines for conducting an exorcism, and for determining when a formal exorcism is required. Priests are instructed to carefully determine that the nature of the affliction is not actually a psychological or physical illness before proceeding.
Who's Afraid of Virginia Woolf?
The term exorcism means the expulsion or attempted expulsion of a supposed evil spirit from a person or place. In this act, it seems that Martha and George intend to remove the great desire they have always had for a child through continuing their story of their imagined son and his death.