All base metal synonyms

noun base metal

• noble metal — any of a number of metals, as gold, silver, mercury, or platinum, that resist oxidation when heated in air, and solution by inorganic acids.
• oxide — a compound in which oxygen is bonded to one or more electropositive atoms.
• precious metal — a metal of the gold, silver, or platinum group.
• rare earth — the oxide of any of the rare-earth elements contained in various minerals.
• rare-earth metal — any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons.