glass seam

glass seam

A fracture in limestone that has been recemented and annealed by deposition of transparent calcite; limestone containing such a seam is structurally sound.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
The operator feels for the glass seam as they insert, so that every bottle is printed between the glass seams.