Ciborium of Sant'Ambrogio (Milan) - Catholic Stock Photo

In ecclesiastical architecture, a ciborium ("ciborion": κιβώριον in Greek) is a canopy or covering supported by columns, freestanding in the sanctuary, that stands over and covers the altar in a basilica or other church. It may also be known by the more general term of baldachin, though ciborium is often considered more correct for examples in churches.

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