'Semidome' definitions:

Definition of 'Semidome'

From: GCIDE
  • Semidome \Sem"i*dome`\, n. (Arch.) A roof or ceiling covering a semicircular room or recess, or one of nearly that shape, as the apse of a church, a niche, or the like. It is approximately the quarter of a hollow sphere. [1913 Webster]