“An arched ceiling of roof constructed of masonry. Simplest is a barrel vault or tunnel vault, which is semicircular in section. Two intersecting barrel vaults of equal size form a groin vault. Rib vaulting employs reinforced ribs at the intersections.”
Excerpted from: Diamond, David G. The Bulfinch Pocket Dictionary of Art Terms. Boston: Little Brown, 1992.
Mark's Text Terminal 