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dormer window[′dȯr·mər ′win·dō]
An extension of an attic room through a sloping roof to accommodate a vertical window.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A vertical window that projects from a sloping roof, placed in a small gable.See also: Chicago window
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
dormer, dormer window
A structure projecting above a sloping roof, usually housing a vertical window. It is not part of the roof structure but is framed separately, and often provides daylight and ventilation for a room located in a garret or loft space. For definitions and illustrations of specific types, see arched dormer, deck dormer, eyebrow dormer, flat-head dormer, gable dormer, hipped dormer, inset dormer, mission dormer, oval dormer, Palladian dormer, pedimented dormer, pitched-roof dormer, pointed dormer, polygonal dormer, recessed dormer, ridge dormer, round dormer, segmental dormer, shed dormer, through-the-cornice dormer, triangular dormer, wall dormer, watershed dormer.
dormer window, dormer
A vertical window which projects from a sloping roof, placed in a small gable.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.