superaltar
/ˈsuːpərɔːltə
/noun
A portable slab of stone consecrated for use where there is no consecrated altar.The Communion-table is of wood, with a vulgar-looking attempt at superaltar and reredos....
- Properly speaking, a superaltar is a small movable slab of stone, which is placed, as occasion for the celebration of the Holy Communion may require, upon some unconsecrated table or altar.
- You may take away from us if you will every external ceremony; you may take away altars, and superaltars, lights and incense and vestments, and we will submit to you.
Origin
Middle English: from medieval Latin superaltare, from super- 'over' + late Latin altar(e) 'altar'.