# definition

> Get or set the joint definition. Reading returns the joint's current configuration, including _bodyA and _bodyB. Writing applies every configurable property in place but does not change the connected bodies, which are fixed when the joint is created.

## Definition

* **Type:** Property
* **Namespace:** [Unity.U2D.Physics](/engine/6000.5/script-reference/unity/u2d/physics.md)
* **Assembly:** UnityEngine.PhysicsCore2DModule

```csharp
public PhysicsHingeJointDefinition definition { get; set; }
```