sandiver

[san-duh-ver]

noun

a whitish, saline scum formed on the surface of molten glass.

Origin of sandiver

1300–50; Middle English saundyver < Middle French suin de verre grease of glass. See sweat, vitri-

Also called glass gall.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for sandiver

Historical Examples of sandiver

The use of the sandiver seems to be, to prevent the iron wire that binds the plated metal tube from being soldered to it.
A Dictionary of Arts, Manufactures and Mines
Andrew Ure