Diaglyph
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Diaglyph
2. A relief engraved in reverse; an intaglio; a sunken relief.

Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
diaglyph
1. A relief engraved in reverse; an intaglio.
2. A sunk relief.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.