platinum metal
Definition
- Noun (mass noun):
- A metallic element: "platinum metal" refers to the chemical element platinum (Pt), a dense, malleable, and highly valuable precious metal. It is silvery-white and resistant to corrosion, commonly used in jewelry, catalytic converters, and industrial applications.
- Contextual usage: In chemistry and metallurgy, "platinum metal" specifically denotes the pure form of platinum as a metallic substance, distinguishing it from its compounds or alloys.
Usage Examples
- (The ring is composed of pure platinum, a precious metal.)
- (Platinum metal is a material that does not easily corrode or react with chemicals.)
Advanced Usage
"Platinum metal group": A collective term for six metallic elements (platinum, palladium, rhodium, ruthenium, iridium, and osmium) that share similar chemical properties.
- The platinum metal group is essential in the production of catalytic converters. (These metals are used together for their catalytic properties.)
"Platinum metal catalyst": A catalyst made from platinum metal used to speed up chemical reactions in industry.
- The hydrogenation process relies on a platinum metal catalyst. (Platinum metal acts as a substance that accelerates the reaction.)
Variants and Related Words
Platinum (n): the element itself, often used interchangeably with "platinum metal."
- The necklace is made of platinum. (The necklace is crafted from the same metallic element.)
Platinic (adj): relating to platinum, especially in its higher oxidation state.
- Platinic compounds are used in some photographic processes. (Compounds containing platinum in a specific chemical form.)
Synonyms
Precious metal: a rare and valuable metallic element (e.g., gold, silver, platinum).
- Platinum metal is classified as a precious metal. (It is a rare and costly material.)
Noble metal: a metal that is resistant to corrosion and oxidation.
- Platinum metal is a noble metal, meaning it does not tarnish easily. (It remains shiny and stable over time.)
Related Idioms