perfect metal

obsolete

(chemistry, obsolete) Any metal, such as gold or silver, not readily oxidized by heat and air.

Japanese Meaning

化学分野で使われる古い用語で、熱や空気による酸化が起こりにくい金属、例えば金や銀などを指す。

Alchemists prized gold as the perfect metal, resistant to oxidation by heat and air.

錬金術師たちは金を貴金属として重んじ、熱や空気による酸化に強いと考えていた。

Sense（1）

(chemistry, obsolete) Any metal, such as gold or silver, not readily oxidized by heat and air.

perfect metals

（ plural ）