compass roof[¦käm·pəs ¦rüf]
A roof in which each truss is in the form of an arch.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A convex-shaped roof formed either by curved rafters or by a combination of beams arranged in a vault.See also: Roof
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
1.A roof having curved rafters or ties.
2. A form of timber roof in which the rafters, collar beams, and braces of each truss combine to form an arch.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.