Affusion

Affusion (la. affusio) is a method of baptism where water is poured on the head of the person being baptized. The word "affusion" comes from the Latin affusio, meaning "to pour on". Affusion is one of three or four methods of baptism, in addition to the greater wetting of total immersion baptism and sprinkling, used by Christians. Christian denominations that baptize by affusion do not deny the legitimacy of baptizing by immersion or aspersion; rather, they consider that affusion is a sufficient, if not preferable, method of baptism.