1. treated or coated to prevent rust formation

Examples

• The rustproofed car body lasted much longer in the salty coastal air.
• All outdoor metal fixtures should be rustproofed before installation.
• The rustproofed steel beams showed no signs of corrosion after ten years.
• She bought rustproofed screws for the deck construction project.
• The manufacturer guarantees that all rustproofed parts will resist corrosion.
• Rustproofed tools are essential for marine environments.