| Subject | English | German |
| commun. | classless inter-domain routing | Classless-Inter-Domain-Routing |
| comp., MS | Classless Interdomain Routing | klassenloses domänenübergreifendes Routing (An IP address and routing management method that allocates IP addresses in a way that reduces the number of routes stored on any individual router, while also increasing the number of available IP addresses. CIDR replaces class-based IP address allocation) |
| econ. | classless society | klassenlose Gesellschaft |