a. Process of reducing a metal compound to the metal and separating it
from the slag; sometimes applied to the smelting process.
b. A reaction taking place at the cathode in electrolysis through transfer
of electrons to the species being reduced.
c. A decrease in positive valence, or an increase in negative valence by
the gaining of electrons. A metallic oxide loses oxygen through the action
of reducing gas, reducing its valence. CF: oxidation
Dictionary of Mining, Mineral, and Related Terms