Definition: A catechumen is a person who has been initiated into the Catholic Church, which means they have received ordination as a priest or deacon. They are typically ordained by a bishop and receive specific training in the liturgy and catechesis of the faith. Catechumens are often called "catechists" or "priests" because their role is to teach and guide others who are not yet fully Catholic, helping them understand the teachings and practices of the Church.