Definition: "Structure" usually refers to a physical or mechanical arrangement that defines the characteristics and functions of an object or system. It includes elements like materials, components, connections, and relationships among them. "In structural engineering," it is also used to describe the analysis of how structures are designed, constructed, and tested to ensure their stability and integrity. The word "structural" describes the way a structure behaves in response to forces applied on it. It's important to note that the meaning can be expanded beyond just physical properties. It refers to the components and connections of an object or system that support its function.