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Classical building with columns across the width of the portico at one or both ends, but without columns on the sides.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
Descriptive of a classical temple or similar building that has no columns along the sides but may have a portico at one or both ends.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.