any metal that is resistant to corrosion or oxidation
A metal resistant to corrosion, oxidizing and tarnishing, such as gold, platinum, copper and mercury.
The noble metals are metals that are resistant to corrosion and oxidation in moist air, unlike most base metals. They tend to be precious, often due to their rarity in the Earth's crust. The noble metals are considered to be copper, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, and gold. Other sources include mercury or even rhenium as a noble metal. On the other hand, titanium, niobium, and tantalum are not included as noble metals despite the fact that they are very resistant to corrosion. Noble metals should not be confused with precious metals.
The numerical value of noble metal in Chaldean Numerology is: 3
The numerical value of noble metal in Pythagorean Numerology is: 9
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"noble metal." Definitions.net. STANDS4 LLC, 2018. Web. 24 Feb. 2018. <https://www.definitions.net/definition/noble metal>.