IPA: /ˈrɛrɪˌdoʊs/
KK: /ˈrɛrɪˌdɔs/
A decorative or ornamental structure placed behind an altar in a church, often made of wood or stone.
The church's reredos was beautifully carved and adorned with gold leaf.
Reredos comes from the Middle English 'reredos' (meaning a screen or decoration behind an altar), which is derived from the Old French 'rere dos' (meaning behind the back). The word refers to a decorative screen or panel placed behind an altar in a church.
Think of a decorative screen that is placed 'behind' ('rere') the altar, which helps you remember that a reredos is a backdrop for an altar.
No commonly confused words.