A vaulted structure having a circular plan and usually the form of a portion of a sphere, so constructed as to exert an equal thrust in all directions

• Dome

• Oculus

• Pendentive

• Squinch

A circular opening, esp. one at the crown of a dome

• Lunette

• Oculus

• Pendentive

• Squinch

An area in the plane of a wall framed by an arch or vault, containing a window, painting, or sculpture

• Lunette

• Oculus

• Pendentive

• Squinch

A spherical triangle forming the transition from the circular plan of a dome to the polygonal plan of its supporting structure

• Lunette

• Oculus

• Pendentive

• Squinch

An arch or corbeling built acrosd the upper inside corner of a square tower to support the side of a superimposed octagonal structure

• Lunette

• Oculus

• Pendentive

• Squinch

A dome built with steel or timber trusses arranged in a radial manner and connected by polygonal rings at various heights

• Radial dome

• Schwedler dome

• Lattice dome

• Geodesic dome

A steel dome structure having members that follow the lines of latitude and longitude, and a third set of diagonals completing the triangulation

• Radial dome

• Schwedler dome

• Lattice dome

• Geodesic dome

A steel dome structure having members that follow the lines of latitude, and two sets of diagonals replacing the lines of longitude and forming a series of isosceles triangles

• Radial dome

• Schwedler dome

• Lattice dome

• Geodesic dome

A steel dome having members that follow three principal sets of great circles intersecting at 60°, subdividing to the dome surface into a series of equilateral spherical triangles

• Radial dome

• Schwedler dome

• Lattice dome

• Geodesic dome

A superstructure crowning a roof or dome and having open or windowed walls to let in light and air

• Lantern

• Cupola

• Tambour