Semidome

1 definition found

From The Collaborative International Dictionary of English v.0.48 [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]