High relief; sculptured work in which the figures project more than half their thickness;
as, this figure is an alto-rilievo or in alto-rilievo. [
1913 Webster]
" When the figure stands only half out, it is called mezzo-rilievo, demi-rilievo, or medium relief; when its projection is less than one half, basso-rilievo, bas-relief, or low relief."
[1913 Webster]