the substructure supporting a dome or cupola.
Origin of tholobate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for tholobate
Historical Examples of 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