Superaltar

(n.) A raised shelf or stand on the back of an altar, on which different objects can be placed; a predella or gradino.

Thesaurus Entries

Communion table, altar carpet, altar desk, altar facing, altar of prothesis, altar rail, altar side, altar slab, altar stair, altar stone, altarpiece, ancona, bomos, chancel table, credence, eschara, frontal, gradin, hestia, holy table, mensal, missal stand, predella, prothesis, retable, retablo, rood altar, scrobis, superaltar