A composite is something made up of complicated and related parts. A composite photograph of your family might have your eyes, your sister’s nose, your dad’s mouth, and your mother’s chin.
Composite comes from the Latin for "putting together." It can be used as a noun or adjective. If you and five friends put together a map showing all the places each of you has ever lived, you’ve created a composite. You could also describe it as a composite map of your lives. Composite is also the name of a family of plants that have many little flowers wound so densely together that it just looks like one flower.