scoria

• Nom désignant à la fois les scories (résidus vitreux ou pierreux de la fusion des métaux ou de la combustion) et, en volcanologie, les fragments de lave poreux et légers éjectés lors d'une éruption.

A noun referring to the scum or dross formed by oxidation on the surface of molten metals.

indénombrable

1. Metallurgical scumC2formaltechnical

   The scum or dross formed by oxidation on the surface of molten metals, often removed during smelting.

   Scorie métallurgique

   • The blacksmith skimmed the scoria from the top of the molten iron.
   • Scoria is a waste product in many metal refining processes.
   • The furnace operator carefully removed the scoria to purify the metal.

   Synonymescinderdrossscumslag