What's the noun for doming? Here's the word you're looking for.
dome
(architecture) A structural element resembling the hollow upper half of a sphere; a cupola.
Anything shaped like an upset bowl, often used as a cover.
(obsolete, poetic) A building; a house; an edifice.
Any erection resembling the dome or cupola of a building, such as the upper part of a furnace, the vertical steam chamber on the top of a boiler, etc.
(crystallography) A prism formed by planesparallel to a lateralaxis which meet above in a horizontal edge, like the roof of a house; also, one of the planes of such a form.