Formed of a single stone, as an obelisk or the shaft of a column.Consisting of monoliths: as, a monolithic circle.Of or pertaining to a monolith.Made of one mass of artificial stone, as a concrete of broken stone, cement, and sand, without joints: used in structures such as mills and houses, dams, retaining-walls, and bridge abutments and piers, floors, columns, and other similar constructions.