suction(redirected from open suction)
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1. the force or condition produced by a pressure difference, as the force holding a suction cap onto a surface
2. the act or process of producing such a force or condition
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
1. In plastering, the absorption of water from a plaster finish coat by the base coat (or the base, such as block or gypsum lath), thus providing a better bond and causing it to adhere to the base coat.
2. The adhesion of mortar to bricks.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.