from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The art or process of mural painting with pigments mixed with water glass.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The painting of murals using pigments mixed with water glass
from the GNU version of the Collaborative International Dictionary of English
- n. A style of painting on plastered walls or stone, in which the colors are rendered permanent by sprinklings of water, in which is mixed a proportion of soluble glass (a silicate of soda).
from The Century Dictionary and Cyclopedia
- n. A method of painting in which water-glass serves as the connecting medium between the color and its substratum.
Sorry, no etymologies found.
His name is to this day associated with soluble glass, an alkaline silicate used in a special kind of fresco painting, called stereochromy, so much so that sometimes it is called Fuchs's soluble glass.
Soluble glass has also been used in Germany to a great extent for mural painting, known as stereochromy.