Architectural term for a rounded roof or ceiling structure. 円蓋 can refer to a dome, cupola, or vaulted ceiling.
A beautiful fresco is painted on the dome of the church.
There is a large dome in the center of this building.
cupular; domed; dome-shaped
total mismatch; ill-suited; square peg in a round hole
Compound of 円 (round) and 蓋 (lid, cover), literally 'round cover'. The exact historical derivation is uncertain, but the term is used in architectural contexts.