1. having had its natural qualities or structure changed, especially by chemical treatment
Usage: often used in scientific contexts
2. made unfit for drinking by adding poisonous or unpalatable substances
Usage: specifically refers to alcohol

Examples

• The laboratory used denatured alcohol for cleaning equipment.
• Denatured proteins lose their biological function.
• The scientist studied denatured DNA samples under the microscope.
• Denatured ethanol is commonly used as a solvent in industry.
• Heat can cause proteins to become denatured and lose their shape.
• The denatured alcohol was clearly labeled as poisonous.
• Extreme pH levels resulted in denatured enzymes that no longer worked.