(n.) The recrement of metals in fusion, or the slag rejected after the reduction of metallic ores; dross.
(n.) Cellular slaggy lava; volcanic cinders.
Example Sentences:
(1) Scoria (volcanic cinder) was most effective in excluding roots of crested wheatgrass and streambank wheatgrass.
Scorify
Definition:
(v. t.) To reduce to scoria or slag; specifically, in assaying, to fuse so as to separate the gangue and earthy material, with borax, lead, soda, etc., thus leaving the gold and silver in a lead button; hence, to separate from, or by means of, a slag.