scoria
/ˈskɔːrɪə/noun
(pl. scoriae /-rɪiː/)
1- mass noun basaltic lava ejected as fragments from a volcano, typically with a frothy texture火山喷出的（尤指泡沫质地的）玄武岩火山石碎块。
1.1
- slag separated from molten metal during smelting（熔炼时从熔化了的金属中分离出来的）矿渣。
派生词
scoriaceous
/ˌskɔːrɪˈeɪʃəs/ adjective词源
late Middle English (denoting slag from molten metal)：via Latin from Greek skōria 'refuse'， from skōr 'dung'. The geological term dates from the late 18th cent.