Definition

Noun: A common, non-precious metal that is relatively inexpensive and often oxidizes or corrodes easily. Base metals are widely used in industry and construction, contrasting with precious metals like gold and silver, which are rare, valuable, and more chemically stable.

Usage

The term "base metal" is used to categorize metals based on their economic value, chemical reactivity, and commonality. It is often used in contexts like metallurgy, economics (commodity trading), jewelry making (as a contrast to precious metals), and industrial manufacturing.

Examples

• The statue was made of base metal and plated with a thin layer of gold.
• In chemistry class, we learned that many base metals, such as iron, react with oxygen to form rust.
• The price of industrial base metals like copper and aluminum fluctuates with global demand.
• Alchemists of old dreamed of transforming base metals into gold.

Advanced Usage

• "Base metal catalysis": In chemistry, this refers to using common, inexpensive metals (like iron or nickel) as catalysts in chemical reactions, which is more sustainable than using rare precious metals.
• "Base metal deposits": In geology and mining, this term describes natural accumulations of common, non-precious metallic ores.

Variants and Related Words

• Non-ferrous base metals: A sub-category of base metals that do not contain iron (e.g., copper, aluminum, lead, zinc, tin).
• Ferrous metals: Metals that contain iron as their main component (e.g., steel, cast iron). While iron itself is a base metal, "ferrous metals" is a more specific industrial term.

Synonyms

• Common metal
• Industrial metal
• Non-precious metal

Antonyms

• Precious metal (e.g., gold, silver, platinum)
• Noble metal (e.g., gold, silver, platinum, palladium—specifically highlighting chemical inertness)

Noun

1. a metal that is common and not considered precious
   • lead, iron, copper, tin, and zinc are base metals