| Kombinationszange | combination pliers engineers pliers |
| Kombinationsfeld | combo box |
| Kompensationshandel | countertrade |
| Kombination | combination |
| Kompensationsebene | compensation depth |
| Ordinationsraum | surgery |
| Oxidationszahl | oxidation number |
| Definitionsmenge | domain |
| Kommunikationsdaten | communication |
| Kombinatorik | combinatorial analysis |
| kombinatorisch | combinatorial |
| Oxidationsflamme | oxidizing flame |
| Demarkationslinie | line of demarcation |
| Gravitationslinse | gravitational lens |
| Ionisationskammer | ionization chamber |
| Ionisationsröhre | ionisation tube ionization tube |
| Konzentrationslager | concentration camp |
| Munitionslager | magazine |
| Subduktionszone | subduction zone |
| Krawattenspange | tie clip |