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a. A roof or vault having a circular, polygonal, or elliptical base and a generally hemispherical or semispherical shape.
b. A geodesic dome.
2. A domelike structure or object.
3. Geology Any of various natural structures having a rounded shape, especially:
a. A system of strata that is uplifted in the center, forming a concentric anticline.
b. A mass of granite that has been weathered into a rounded shape by exfoliation.
c. A mound formed by the extrusion of viscous lava from a volcano.
4. Chemistry A form of crystal with two similarly inclined faces that meet at an edge parallel to the horizontal axis.
5. Slang The human head.
6. Archaic A large, stately building.
v. domed, dom·ing, domes
1. To cover with or as if with a dome.
2. To shape like a dome.
To rise or swell into the shape of a dome.

[From French dôme, dome, cathedral (from Italian duomo, cathedral, from Latin domus, house; see dem- in Indo-European roots) and from French dôme, roof (from Provençal doma, from Greek dōma, house; see dem- in Indo-European roots).]

dom′al (dō′məl) adj.


of or pertaining to a dome


- Means of or pertaining to a house or houses.
See also related terms for houses.
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References in periodicals archive ?
Furthermore, domal uplift, rifting and magmatism were contemporaneous at several localities within the eastern East European Craton, suggesting that all these processes have been caused by a cluster of mantle plumes.
Secondly, the committee would examine the drilling of several deeper vertical holes to test several domal features for potential gold mineralization at depth.
Removal of a one-to-two-metre cover of Leda clay had revealed a unit of dolostone in the Paleozoic Oxford Formation replete with laterally linked domal stromatolites, some up to 4 m in diameter, with synoptic reliefs up to 60 cm (Fig.
Mineralization seems to be closely associated to a rhyolitic-dacitic intrusive body domal in shape and consisting of a series of sub-vertical, brecciated, quartz-rich zones that outcrop within an area of 4 sq.