
[French, from Spanish retablo, from alteration of Catalan retaule, from earlier reataula, from Medieval Latin retrōtabulum : Latin retrō-, retro- + Latin tabula, tablet, board.]
A decorative screen set up above and behind an altar, generally forming an architectural frame to a picture, bas-relief, or mosaic.
A retable is a framed altarpiece, raised slightly above the back of the altar or communion table, on which are placed the cross, ceremonial candlesticks and other ornaments.
Foreign usage of the term, as in French, is different, and where the word is kept with this foreign application, the distinction should be observed. The Medieval Latin retrotabulum (modernized retabulum) was applied to an architectural feature set up at the back of an altar, and generally taking the form of a screen framing a picture, carved or sculptured work in wood or stone, or mosaic, or of a movable feature such as the Pala d'Oro in St Mark's Basilica, Venice, of gold, jewels and enamels. The foreign retable is, therefore, what should in English be called a reredos, though that is not in modern usage a movable feature.
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