1. to show clearly by giving proof or evidence
2. to show how something works or is done by doing it yourself
3. to take part in a public protest or march

Examples

• The experiment demonstrates that water boils at 100 degrees Celsius.
• Her success demonstrates the value of hard work.
• The teacher demonstrates how to solve the math problem on the board.
• The chef demonstrates the proper way to chop vegetables.
• Thousands of people demonstrated against the new law.
• Students demonstrated peacefully outside the government building.
• The data clearly demonstrates a connection between the two variables.