slag
スラグ
解説 Definition
slag は金属を精錬するときに出る鉱さい、スラグという意味です。日本語のカタカナ語「スラグ」とほぼ同じ専門的な意味で使われ、日常語ではあまり多く使われません。
Slag is the waste or stony material separated from metal during smelting or refining. It consists largely of impurities and added fluxes, and some types can be processed for reuse in construction materials such as roads or cement.
覚え方のコツ Memory Tip
製鉄所で molten metal「溶融金属」から取り除かれる不純物のかたまりを思い浮かべ、remove slag、produce slag、reuse slag の組み合わせで覚えます。ore「鉱石」や metal「金属」そのものではなく、精錬時に分離される副産物です。日本語の専門語「スラグ」とほぼ同じ範囲で使えます。
Picture a furnace containing molten metal. The valuable metal is kept, while a separate layer of unwanted mineral material is removed as slag. This makes the contrast with ore and metal clear: ore is the material processed to obtain metal, metal is the desired product, and slag is the separated by-product. Learn it in practical combinations such as remove slag, produce slag, molten slag, and reuse slag. In technical Japanese, the loanword スラグ refers to essentially the same material, so connect the English spelling directly with the familiar industrial term.
例文
The factory removes slag from the melted metal.
その工場では溶けた金属からスラグを取り除きます。
Slag can be reused in some road materials.
スラグは一部の道路材料に再利用できます。
Workers checked the amount of slag after the process.
作業員たちは工程の後でスラグの量を確認しました。
slag の類義語・関連語
slag の語源・成り立ち Etymology
中低ドイツ語 slagge(鍛冶の滓)に由来し、schlagen(打つ)と同根。金属を打って精錬する際に出る不純物の意。英語 slay(打ち殺す)やドイツ語 Schlag(打撃)と同じ語根を持ち、「打つ行為から生じるもの」が原義。
Slag entered English from a Low German or related Germanic form comparable to Middle Low German slagge, referring to waste from metalworking. It is historically associated with Germanic words connected with striking or hammering, reflecting early smithing practices. In English, the industrial noun became established for the nonmetallic material separated during smelting and refining. Its modern technical sense is more precise than its broader figurative or informal uses.
同じレベルの語彙をもっと
外部辞書で調べる
この英単語をクイズで覚えよう