1. an alloy of copper and nickel, typically used for coins and marine equipment

Examples

• The new quarters are made of cupronickel instead of silver.
• Cupronickel is highly resistant to corrosion in seawater.
• The ship’s propeller was cast from cupronickel for durability.
• Many modern coins contain cupronickel rather than precious metals.
• The cupronickel tubing won’t rust in the marine environment.
• Cupronickel typically contains about 75% copper and 25% nickel.