tierceron
/ˈtɪrsərɑn/
noun
- In Gothic architecture, a diagonal rib that connects the central boss of a vault to the springing points, forming part of the vault's structural framework.
- The cathedral's ceiling featured intricate tierceron ribs that spread like a fan from the central boss.
- The restoration team carefully repaired the damaged tierceron, preserving the original design.
- Medieval builders used tiercerons to distribute the weight of the stone vault more evenly.