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[dohm] /doʊm/
  1. a vault, having a circular plan and usually in the form of a portion of a sphere, so constructed as to exert an equal thrust in all directions.
  2. a domical roof or ceiling.
  3. a polygonal vault, ceiling, or roof.
any covering thought to resemble the hemispherical vault of a building or room:
the great dome of the sky.
anything shaped like a hemisphere or inverted bowl.
(in a dam) a semidome having its convex surface toward the impounded water.
Crystallography. a form having planes that intersect the vertical axis and are parallel to one of the lateral axes.
Geology. upwarp.
Also called vistadome. Railroads. a raised, glass-enclosed section of the roof of a passenger car, placed over an elevated section of seats to afford passengers a full view of scenery.
Horology. an inner cover for the works of a watch, which snaps into the rim of the case.
a mountain peak having a rounded summit.
Slang. a person's head:
I wish I could get the idea into that thick dome of yours.
verb (used with object), domed, doming.
to cover with or as if with a dome.
to shape like a dome.
verb (used without object), domed, doming.
to rise or swell as a dome.
Origin of dome
1505-15; < Middle French dome < Italian duomo < Medieval Latin domus (Deī) house (of God), church; akin to timber
Related forms
domelike, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for dome
Contemporary Examples
Historical Examples
  • Jerold Brown and his wife remained in this city, in an apartment as well situated as that of the Yarbro's, in the first dome.

  • My saloon luckily has a dome, and under the dome we placed it.

  • Thus crippled by the loss of his staff, we had to lower him the rest of the way down the dome by means of the rope we carried.

    Steep Trails John Muir
  • The dome on the new court-house is expected to be completed by domesday.

  • In all this tumult, away to the northeast, the beacon light above the Sunrise dome was cutting the darkness with a steady beam.

    A Master's Degree Margaret Hill McCarter
British Dictionary definitions for dome


a hemispherical roof or vault or a structure of similar form
something shaped like this
(crystallog) a crystal form in which two planes intersect along an edge parallel to a lateral axis
a slang word for the head
  1. a structure in which rock layers slope away in all directions from a central point
  2. another name for pericline (sense 2)
verb (transitive)
to cover with or as if with a dome
to shape like a dome
Derived Forms
domelike, adjective
domical (ˈdəʊmɪkəl; ˈdɒm-) adjective
Word Origin
C16: from French, from Italian duomo cathedral, from Latin domus house
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for dome

"round, vaulted roof," 1650s, from French dome (16c.), from Provençal doma, from Greek doma "house, housetop" (especially a style of roof from the east), related to domos "house" (see domestic).

In the Middle Ages, German dom and Italian duomo were used for "cathedral" (on the notion of "God's house"), so English began to use this word in the sense "cupola," an architectural feature characteristic of Italian cathedrals. Used in U.S. also with reference to round summits of mountains.

Online Etymology Dictionary, © 2010 Douglas Harper
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dome in Science
  1. A circular or elliptical area of uplifted rock in which the rock dips gently away, in all directions, from a central point.

  2. A wedge-shaped mineral crystal that has two nonparallel, similarly inclined faces that intersect along a plane of symmetry.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Slang definitions & phrases for dome



The head: But when the messenger's got a gat pointed at your dome, what are you gonna do? (1880s+)

Related Terms


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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