n. A building; a house; especially, a stately building; a great hall; a church or temple.n. In architecture, a cupola; a vault upon a plan circular or nearly so; a hemispherical or approximately hemispherical coving of a building.n. This restricted application of the term arose from the fact that the churches of Italy were almost universally built with a cupola at the intersection of the nave and the transept, or over the sanctuary. In some instances dome may refer equally well to the church or cathedral, or to the cupola which is its most conspicuous feature.n. Anything shaped like a cupola.n. The dome-shaped part of the roof of an astronomical observatory, placed over a telescope.n. In crystallography, a form whose planes intersect the vertical axis, but are parallel to one of the lateral axes: so called because it has above or below a horizontal edge like the roof of a house; also, one of the faces of such a form.To furnish or cover with a dome; give the shape of a dome to.An obsolete form of doom.n. In geology, an anticlinal fold whose axis equals or approximates a point; an anticlinal fold with quaquaversal dip. Domes are most commonly produced by laccoliths, but they may be due to intersecting folds.