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In short, it is a ritual performed by a Catholic priest to expel the devil from a person, place or thing.
There are several types of exorcism in the Roman Catholic Church:
Baptismal exorcism - blessing an infant prior to baptism to cleanse it of evil resulting from original sin
Simple exorcism - blessing a place or thing to rid it of evil influence
Real exorcism - performing the Rite of Exorcism to rid a human being of diabolical possession . A "real exorcism" is what most of us think of when we think of exorcism. In this case, the priest-exorcist is dealing with a human being who is possessed by the devil -- the devil is inhabiting this person's body.
According to the Church, telltale signs of demonic possession include:
Speaking or understanding languages which the person has never learned (different from "speaking in tongues," which is considered a sign of religious ecstasy, not possession)
Knowing (and revealing) things the person has no earthly way of knowing
Physical strength beyond the person's natural physical makeup
A violent aversion to God, the Virgin Mary, the cross and other images of Catholic faith
There are several types of exorcism in the Roman Catholic Church:
Baptismal exorcism - blessing an infant prior to baptism to cleanse it of evil resulting from original sin
Simple exorcism - blessing a place or thing to rid it of evil influence
Real exorcism - performing the Rite of Exorcism to rid a human being of diabolical possession . A "real exorcism" is what most of us think of when we think of exorcism. In this case, the priest-exorcist is dealing with a human being who is possessed by the devil -- the devil is inhabiting this person's body.
According to the Church, telltale signs of demonic possession include:
Speaking or understanding languages which the person has never learned (different from "speaking in tongues," which is considered a sign of religious ecstasy, not possession)
Knowing (and revealing) things the person has no earthly way of knowing
Physical strength beyond the person's natural physical makeup
A violent aversion to God, the Virgin Mary, the cross and other images of Catholic faith