superaltar

/ˈsupɚˌɔltɚ/

Etymology

From super- + altar.

superaltar means Within the Christian Church, a portable altar consecrated for use on unconsecrated surfaces. Lexicurio rates it Sui generis — a strength score of 89 out of 100.

noun

Within the Christian Church, a portable altar consecrated for use on unconsecrated surfaces.
A raised shelf or stand on the back of an altar, suitable for holding objects; a predella or gradino.