slag; molten slag
Technical term in metallurgy for the waste material separated from molten metal during smelting or refining.
At the steelworks, a large amount of slag is produced.
Slag is sometimes reused as a raw material for cement.
Standard kanji form for 'slag' in metallurgy.
Variant using 熔 (a non-jōyō kanji for melting). Rarely used; 溶滓 is preferred.
Compound of 溶 (melt) and 滓 (dregs, sediment). The reading ようさい is the standard on'yomi; ようし is a less common alternative reading.