| Subject | English | German |
| environ. | accident source The cause or origin of an unexpected occurrence, failure or loss with the potential for harming human life, property or the environment | Unfallsursache |
| environ. | accident source | Unfallsursache |
| gen. | accident source term | Unfall-Quellterm |
| gen. | accident source term | Stoerfall-Quellterm |
| transp. | source of an accident | Unfallursache |