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, chemical compound that contains water. A common hydrate is the familiar blue vitriol, a crystalline form of cupric sulfate. Chemically, it is cupric sulfate pentahydrate, CuSO4·5H2O.
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The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
A deposit, usually white, formed on the surface of a brick, block, or concrete wall; it consists of salts leached from the surface of the wall.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
The period or process of flowering.
The property of hydrated crystals to lose water of hydration and crumble when exposed to air.
A crust of salts, usually white, that forms on the surface of stone, brick, plaster, or mortar because of leaching of free alkalies from adjacent concrete or mortar.
A whitish powder, consisting of one or several minerals produced as an encrustation on the surface of a rock in an arid region. Also known as bloom.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
An encrustation of soluble salts, commonly white, deposited on the surface of stone, brick, plaster, or mortar; usually caused by free alkalies leached from mortar or adjacent concrete as moisture moves through it.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
1. Chem Geology
a. the process of efflorescing
b. the powdery substance formed as a result of this process, esp on the surface of rocks
2. any skin rash or eruption
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005