Chicago window

Chicago window

A horizontal window consisting of a large square fixed central pane with narrow vertical sliding sashes on either side, typically the full width of the bay, as in the Carson Pirie & Scott store by Louis Sullivan.

circular window

A window in the shape of a full circle, often with decorative elements, and arranged in a radial manner.

compass window

A rounded bay window that projects from the face of a wall; also a window having a rounded semicircular member at its head.

coupled window

Two closely spaced windows which form a pair.

crippled window

A dormer window.

dormer window

A vertical window that projects from a sloping roof, placed in a small gable.

double lancet window

A window having mullions shaped to form two lancet windows that are side by side; found in Carpenter Gothic, Collegiate Gothic, and Tudor Revival styles.

double window

Two windows, side by side, which form a single architectural unit.

double-hung window

A window having two vertically sliding sashes, each closing a different part of the window; the weight of each sash is counterbalanced for ease of opening and closing.

eyebrow window

A bottom-hinged, inward-opening sash located in the window of an eyebrow dormer.

false window

The representation of a window that is inserted in a facade to complete a series of windows or to give the appearance of symmetry.

folding casement

One of a pair of casements, with rabbeted meeting stiles, which is hung in a single frame without a mullion and hinged together so that it can open and fold in a confined space.

Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

Chicago window

A large plate-glass window in a commercial building with an operable window on each side to provide ventilation; because of its large size, it provided greater natural illumination than earlier windows. Widely used in high buildings in Chicago in the late 19th century.

McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.