smalt(redirected from vitreous sand)
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A deep blue paint and ceramic pigment produced by pulverizing a glass made of silica, potash, and cobalt oxide.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Ceramics) a type of silica glass coloured deep blue with cobalt oxide
2. (Ceramics) a pigment made by crushing this glass, used in colouring enamels
3. (Colours) the blue colour of this pigment
[C16: via French from Italian smalto, of Germanic origin; related to smelt1]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
powdered blue glass used to color vitreous materials.
[1550–60; < Middle French < Italian smalto smalto]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.