mezzo-relievo
noun
mez·zo-re·lie·vo ˌmet-(ˌ)sō-ri-ˈlē-(ˌ)vō 
-rēl-ˈyā-(ˌ)vō,
ˌmed-(ˌ)zō-
variants or mezzo-rilievo
plural mezzo-relievos
: sculptural relief intermediate between bas-relief and high relief
Word History
Etymology
Italian mezzorilievo, from mezzo + rilievo relief
First Known Use
1598, in the meaning defined above