scoria

[ skawr-ee-uh, skohr- ]
/ ˈskɔr i ə, ˈskoʊr- /

noun, plural sco·ri·ae [skawr-ee-ee, skohr-] /ˈskɔr iˌi, ˈskoʊr-/.

Metallurgy. the refuse, dross, or slag left after melting or smelting metal; scum.
Geology. a cinderlike basic cellular lava.

Origin of scoria

1350–1400; Middle English < Latin scōria < Greek skōría, derivative of skôr dung

OTHER WORDS FROM scoria

sco·ri·a·ceous [skawr-ee-ey-shuh s, skohr-] /ˌskɔr iˈeɪ ʃəs, ˌskoʊr-/, adjective

Example sentences from the Web for scoriae

British Dictionary definitions for scoriae

scoria
/ (ˈskɔːrɪə) /

noun plural -riae (-rɪˌiː)

a rough cindery crust on top of solidified lava flows containing numerous vesicles
refuse obtained from smelted ore; slag

Derived forms of scoria

scoriaceous (ˌskɔːrɪˈeɪʃəs), adjective

Word Origin for scoria

C17: from Latin: dross, from Greek skōria, from skōr excrement

Scientific definitions for scoriae

scoria
[ skôrē-ə ]

Plural scoriae (skôrē-ē′)

Rough, crusty, solidified lava containing numerous vesicles that originated as gas bubbles in the lava while it was still molten.