reredos /ˈɹiə.dɒs/ noun2 •A screen or decoration behind the altar in a church, usually depicting religious iconography or images, akin to the iconostasis of the Eastern Churches.A bad reredos will ruin the best church ever designed; and, although a good reredos cannot convert a bad church into a good one, it may do much to lessen the offensiveness of its badness. — 1871 •The back of an open fire-hearth, in medieval halls and in some later architecture inspired by them. formsreredoses