dome

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A vaulted roof having a circular, polygonal, or elliptical base and a generally hemispherical or semispherical shape.
2. n. A geodesic dome.
3. n. A domelike structure, object, or natural formation.
4. n. Chemistry A form of crystal with two similarly inclined faces that meet at an edge parallel to the horizontal axis.
5. n. Slang The human head.
6. n. Archaic A large, stately building.
7. v. To cover with or as if with a dome.
8. v. To shape like a dome.
9. v. To rise or swell into the shape of a dome.

Century Dictionary and Cyclopedia

1. n. A building; a house; especially, a stately building; a great hall; a church or temple.
2. n. In architecture, a cupola; a vault upon a plan circular or nearly so; a hemispherical or approximately hemispherical coving of a building.
3. 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.
4. n. Anything shaped like a cupola. A hemispherical arch.
5. n. The dome-shaped part of the roof of an astronomical observatory, placed over a telescope. It is usually hemispherical, and is so arranged that any desired part of the heavens may be disclosed to the instrument. In some forms this is accomplished by means of a continuous series of shutters; in others, a complete longitudinal section of the dome, from apex to base, can be removed or thrown open as far as desired, and a mechanism is provided to revolve the dome so that the aperture can be made to command any part of the heavens.
6. 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. In the orthorhombic system, a dome, if parallel to the longer lateral axis, is a macrodome; if parallel to the shorter lateral axis, a brachydome. In the monoclinic system a dome is an orthodome or clinodome according as it is parallel to that lateral axis which is respectively perpendicular or oblique to the vertical axis.
7. To furnish or cover with a dome; give the shape of a dome to.
8. An obsolete form of doom.
9. 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.

Wiktionary

1. n. A common structural element of architecture that resembles the hollow upper half of a sphere, a cupola.
2. n. Anything shaped like an upset bowl, often used as a cover, e.g. a cake dome.
3. n. slang head (including the meaning 'oral sex')

GNU Webster's 1913

1. n. A building; a house; an edifice; -- used chiefly in poetry.
2. n. (Arch.) A cupola formed on a large scale.
3. n. Any erection resembling the dome or cupola of a building; as the upper part of a furnace, the vertical steam chamber on the top of a boiler, etc.
4. n. (Crystallog.) A prism formed by planes parallel to a lateral axis which meet above in a horizontal edge, like the roof of a house; also, one of the planes of such a form.
5. n. obsolete Decision; judgment; opinion; a court decision.

WordNet 3.0

1. n. a stadium that has a roof
2. n. a hemispherical roof
3. n. informal terms for a human head
4. n. a concave shape whose distinguishing characteristic is that the concavity faces downward