A person who maintains, serves, or is responsible for an altar in a church, such as an altar server or sacristan.
From 'altar' + the agent suffix '-ist,' creating a noun for someone whose profession or role involves working with altars.
Altar servers—young people training to become priests or simply serving their church—often start as altarists, learning ritual, discipline, and spiritual significance through the simple work of caring for sacred objects.
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