squinch

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squinch,

in architecture, a piece of construction used for filling in the upper angles of a square room so as to form a proper base to receive an octagonal or spherical dome. It was the primitive solution of this problem, the perfected one being eventually provided by the pendentive. Squinches may be formed by masonry built out from the angle in corbeled courses, by filling the corner with a vise placed diagonally, or by building an arch or a number of corbeled arches diagonally across the corner. In Islamic architecture, especially in Persia, where it may have been invented, the squinch took the form of a succession of corbeled stalactites. It was also commonly used in the early churches of Europe and the East.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

Squinch

Corbeling built at the upper corners of a structural bay to support a smaller dome or drum; a small arch across the corner of a square room which supports a superimposed octagonal structure above.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Squinch

 

in architecture, a vaulted structural component consisting of parts of a cone or half or quarter of a spherical cupola. Squinches are usually employed for the transition from a square substructure to a round or polygonal superstructure and to a cupola or its drum. They are sometimes also used to support angular cupolas and oriels. Squinches were widespread in the medieval architecture of Southwest and Central Asia, the Transcaucasus, and Europe; in Russia they were used primarily in the 17th century.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

squinch

[skwinch]
(architecture)
A small arch across the interior corner of a structure to support a superimposed mass such as a dome or spire. Also known as squinch arch.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

squinch

squinch, 2
1. Corbeling, often arcuate, built at the upper corners of a structural bay to support its tangent, smaller dome or drum.
2. A small arch across the corner of a square room which supports a superimposed mass; also called a sconce.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
That is not to say that the unions are squinching their eyes completely to the crisis facing public education.