DOME-CÚPULA,CIMBORRIO, DOMBO,MEDIA NARANJA, TODA CUBIERTA EN FORMA DE COPA INVERTIDA.

A dome is a common structural element of architecture that resembles the hollow upper half of a sphere. Domes do not have to be perfectly spherical in cross-section, however; a dome may be a section through an ellipse. If the baseline is taken parallel to the shorter of an ellipse's two diameters, a tall dome results, giving a sense of upward reach. A section across the longer axis results in a low dome, capping the volume instead. A very low dome is a saucer dome (see below). All the surfaces of any dome are curved. A spectacular innovation, one that is at the heart of Baroque style, is the oval dome, which gives axial direction and movement to the space beneath it. Though the oval dome is identified with churches of Bernini and Borromini, the first oval dome was erected by Vignola for a small chapel, Sant'Andrea in via Flaminia often called Sant'Andrea del Vignola, which was commissioned in 1552 by Julius III, and finished the following year [1], the biggest oval dome was built in the basilica of Vicoforte by Francesco Gallo.
http://en.wikipedia.org/wiki/Dome