— scoriaceous /skawr'ee ay"sheuhs, skohr'-/ , adj.
/skawr"ee euh, skohr"-/ , n. , pl. scoriae /skawr"ee ee', skohr"-/ .
1. Metall. the refuse, dross, or slag left after melting or smelting metal; scum.
2. Geol. a cinderlike basic cellular lava.
[ 1350-1400; ME scoria skoría, deriv. of skôr dung ]