Trefoil arch

A trefoil arch, or three-foiled cusped arch (occasionally trilobite arch, no connection to an actual trilobite), is an arch incorporating the shape or outline of a trefoil – three overlapping circles.

[1] It has been widely used for its symbolic significance in Christian architecture.

[citation needed] Trefoil arches are common in Gothic architecture for portals and decoration.

[1] Trefoil or "trilobed" arches are also a characteristic feature of decorated portals in late Fatimid architecture and Mamluk architecture in Egypt, from approximately the 12th to 16th centuries.

[2]: 191 [3]: 89 This architectural element–related article is a stub.