(obsolete, chemistry) Hydrogen, especially when formerly considered as a metal.
hydrometallurgical
hydrometallurgical
adj
Of or pertaining to hydrometallurgy
hydrometallurgically
hydrometallurgically
adv
Using hydrometallurgy.
hydrometallurgy
hydrometallurgy
noun
The field of extractive metallurgy involving the use of aqueous chemistry for the recovery of metals from ores, concentrates, and recycled or residual materials.
