Decorations behind or above the altar. The reredos is typically a wooden screen, hanging, or panel. It may consist of stone, wood, jeweled metalwork, or drapery. The reredos may contain biblical scenes, scenes from the lives of the martyrs, statues of apostles and saints, panels inscribed with the Lord's Prayer and the Ten Commandments, or other Christian symbols.
Glossary definitions provided courtesy of Church Publishing Incorporated, New York, NY,(All Rights reserved) from "An Episcopal Dictionary of the Church, A User Friendly Reference for Episcopalians," Don S. Armentrout and Robert Boak Slocum, editors.