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(both: klĭr`stōr'ē, –stôr'ē), a part of a building whose walls rise higher than the roofs of adjoining parts of the structure. Pierced by windows, it is chiefly a device for obtaining extra light. It had an early use in certain Egyptian temples, as at Karnak, and was used later in the great halls of Roman basilicas. It became a characteristic element of medieval churches, receiving its fullest development in churches of the Gothic period.
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An upper story or row of windows rising above the adjoining parts of the building, designed as a means of admitting increased light into the inner space of the building.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved


The upward extension of enclosed space achieved by bringing a windowed wall up to interrupt the slope of the roof.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

clerestory, clerestory window

clerestory, 2 A
1.An upper zone of wall pierced with windows that admit light to the center of a lofty room.
2. A window so placed. (See illustration p. 218.)
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.


, clearstory
1. a row of windows in the upper part of the wall of a church that divides the nave from the aisle, set above the aisle roof
2. the part of the wall in which these windows are set
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Window Type 3 is the fixed clerestory window, and Window Type 4 is a replacement casement window installed in our laboratory last year.
To learn more about Clerestory Systems, please visit
* One word: windows Cotilla's claims that his innovative use of a clerestory, or dome ringed with windows, to introduce light into the stairwell of an alternative center "won't bust anybody's budget." But those who look at this feature will certainly find it interesting.
As Christians Billy Graham and Cardinal Theodore McCarrick prayed with fellow Christians Bush and Cheney in a Christian cathedral where an image of the crucified Christ hung high above the clerestory, I couldn't help but remember an observation of the Hindu Mohandas Gandhi: "The only people on Earth who do not see Christ's teachings as nonviolent are Christians."
As the property is within a conservation area, it has not been extended, and the tasteful conversion retains a wealth of exposed beams, as well as the inclusion of specially-made double glazed clerestory windows.
PROJECT DESCRIPTION: This furniture manufacturing facility features high under-frame clearances with a clerestory at the ridge to aid with multiple manufacturing processes and natural-flow ventilation enhanced by powered fans that can change the air in the 7.5 minutes.
This pastoral letter emanating from Wisconsin highlights the symbiotic relationship between the rite of Eucharist within the church and its practice outside the clerestory. "Eucharist without walls" is a powerful image, a great thought, and, if fully practiced, surely would "stretch out to cover the land with goodness."
We have copied their columns and arches, the high clerestory and the filtered light.
One way is to integrate atriums or courtyards and clerestory windows to bring in daylight in the home or building.
who incorporated a plethora of classic, midcentury modern architectural memes, such as post-and-beam construction, a usable atrium, high ceilings, clerestory windows and vast walls of glass.
A continuous strip of clerestory windows provides daylight for the interior spaces.