blister copper

noun

, Metallurgy.

1. a matte of from 96 to 99 percent copper, having a blistered surface after smelting because of gases generated during solidification.

blister copper

noun

1. an impure form of copper having a blister-like surface due to the release of gas during cooling

Word History and Origins

Origin of blister copper¹

First recorded in 1860–65

Example Sentences

In "blister copper" (which is the unrefined metal), aluminium, silicon, and phosphorus may be met with.

From Project Gutenberg

It is again melted and tapped into sand moulds, the product being called blister copper.

From Project Gutenberg