D defs.my
Entry 1 sense Webster, 1913

Superaltar

· Su·per·al·tar · IPA /ˈsupɚˌɔltɚ/
01 n. A raised shelf or stand on the back of an altar, on which different objects can be placed; a predella or gradino.
  1. 1.
    A raised shelf or stand on the back of an altar, on which different objects can be placed; a predella or gradino.(Arch.)