Illustrative means serving as an example that helps explain or demonstrate something. When a teacher tells an illustrative story about explorers getting lost to explain why maps matter, that story makes the concept clearer and more memorable than just stating facts.

Scientists use illustrative experiments to show how principles work in action. A demonstration of how magnets attract iron filings is illustrative of magnetic force. In books, illustrative examples help readers understand abstract ideas by connecting them to concrete situations they can picture.

An illustrative case doesn't prove something is always true, but it shows what you mean in a way people can understand. When you're trying to explain a complicated game to friends, you might play through an illustrative round so they can see the rules in action rather than just hearing about them.

Teachers, writers, and speakers regularly use illustrative examples because showing beats telling. When someone asks, “Can you give me an illustrative example?” they want you to paint a picture that brings your point to life.