The step, or raised secondary part, of an altar; a superaltar; hence, in Italian painting, a band or frieze of several pictures running along the front of a superaltar, or forming a border or frame at the foot of an altarpiece.
Painting on vertical face of altar step.
A row of small pictures at base of a large altarpiece. (Martindale, Andrew. Gothic Art, 269)
a long, narrow panel which forms the base of a large altarpiece
1.painting or sculpture or a series of small paintings or sculptures in a long narrow strip forming the lower edge of an altarpiece or the face of an altar step or platform; 2.platform in a church upon which the altar stands
a narrative canvas attached to the larger Renaissance altar painting
A series of small images or carvings at the base of an altarpiece.
The narrow ledge on which an altarpiece rests on an altar.
A predella is the platform or step on which an altar stands. In painting, predella refers to the paintings or sculptures running along the frame at the bottom of an altarpiece. They often consist of narrative scenes, e.g. scenes in the life of a particular saint.