Scoria

skō′ri-a, n. dro or slag left from metal or ores after being under fire: a genus of geometrid moths:— pl. Scō′riæ , volcanic ashes.— adjs. Scō′riac , Scoriā′ceo us .— ns. Scorificā′tion , the act or operation of reducing a body to scoria: a method of a aying by fusing the ore with metallic lead and borax in a scorifier; Scor′ifīer , a flat dish used in such a form of a aying.— adj. Scō′riform , like scoria.— v.t. Scō′rify , to reduce to slag.— adj. Scō′rio us . [L.,—Gr. skōria .]