- the substructure supporting a dome or cupola.
Origin of tholobate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for tholobate
Here the diameter decreases by the breadth of the gallery to 108 feet, and the Tholobate rises.Bell's Cathedrals: The Cathedral Church of St. Paul