A model of an object is a physical representation that shows what it looks like or how it works. The model is often smaller than the object it represents.

A model is a system that is being used and that people might want to copy in order to achieve similar results.

A model of a system or process is a theoretical description that can help you understand how the system or process works, or how it might work.

If someone such as a scientist models a system or process, they make an accurate theoretical description of it in order to understand or explain how it works.

If you say that someone or something is a model of a particular quality, you are showing approval of them because they have that quality to a large degree.

You use model to express approval of someone when you think that they perform their role or duties extremely well.

If one thing is modelled on another, the first thing is made so that it is like the second thing in some way.

If you model yourself on someone, you copy the way that they do things, because you admire them and want to be like them.

A particular model of a machine is a particular version of it.

An artist's model is a person who stays still in a particular position so that the artist can make a picture or sculpture of them.

If someone models for an artist, they stay still in a particular position so that the artist can make a picture or sculpture of them.

A fashion model is a person whose job is to display clothes by wearing them.

If someone models clothes, they display them by wearing them.

If you model shapes or figures, you make them out of a substance such as clay or wood.