1. made impure or unsafe by the addition of harmful or undesirable substances

Examples

• The contaminated water made several people sick.
• Workers wore protective suits to handle the contaminated soil.
• The food was contaminated with bacteria during processing.
• Scientists tested the contaminated samples in the laboratory.
• The oil spill left miles of contaminated coastline.
• Contaminated blood products posed a serious health risk.
• The factory was shut down after contaminated products were discovered.