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smalt

[ smawlt ]

noun

  1. a coloring agent made of blue glass produced by fusing silica, potassium carbonate, and cobalt oxide, used in powdered form to add color to vitreous materials.


smalt

/ smɔːlt /

noun

  1. a type of silica glass coloured deep blue with cobalt oxide
  2. a pigment made by crushing this glass, used in colouring enamels
  3. the blue colour of this pigment
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of smalt1

1550–60; < Middle French < Italian smalto smalto
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Word History and Origins

Origin of smalt1

C16: via French from Italian smalto , of Germanic origin; related to smelt 1
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Example Sentences

The inferior kinds of smalt are occasionally adulterated with chalk.

This blue is distinguished from smalt by dissolving in acetic acid.

The calx of cobalt is of a deep blue colour, which, when fused, makes the blue glass called smalt.

The smalt is usually composed of one part of calcined cobalt, fused with two parts of powder of flint and one of pot-ash.

Sometimes a little indigo blue or smalt is also added, when a peculiar bloom colour is desired.

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