water glass

water glass

noun
1.
a drinking glass; tumbler.
2.
a glass container for holding water, as for growing bulbs, plants, or the like.
3.
a glass tube used to indicate water level, as in a boiler.
4.
a device for observing objects beneath the surface of the water, consisting essentially of an open tube or box with a glass bottom.
Also, waterglass.


Origin:
1600–10

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
water clock or water glass
 
n
any of various devices for measuring time that use the escape of water as the motive force
 
water glass or water glass
 
n

water glass
 
n
1.  a viscous syrupy solution of sodium silicate in water: used as a protective coating for cement and a preservative, esp for eggs
2.  water clock another name for water gauge

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

water glass n.
See soluble glass.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Britannica
Encyclopedia

water glass

crystal-like lumps that range from colourless to white or grayish white and resemble glass but can be dissolved in water to form a syrupy liquid. Some forms are slightly soluble, and some are almost insoluble; they are best dissolved by heating with water under pressure. A little water dissolves water glass more readily than much water does. The solutions are strongly alkaline. The chemical formulas Na2SiO3, Na6Si2O7, and Na2Si3O7 describe the composition of various forms of water glass.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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