- half a dome, especially as formed by a vertical section, as over a semicircular apse.
Origin of semidome
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for semidome
Against each side of the square a semidome is set, thus producing a quatrefoil plan at the vaulting level.Byzantine Churches in Constantinople
Alexander Van Millingen
- a half-dome, esp one used to cover a semicircular apse
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012