| Kondensationsflasche | Leyden jar |
| Sensationsmache | sensationalism |
| Kondensation | condensation |
| Konzentrationslager | concentration camp |
| Kompensationshandel | countertrade |
| Kompensationsebene | compensation depth |
| Kunststoffflasche | plastic bottle |
| Konfektionsgröße | size |
| Konfessionsloser | nonsectarian |
| Konversationslexikon | encyclopedia |
| konfessionslos | nonsectarian |
| Kondensmilch | condensed milk evaporated milk dehydrated milk |
| Sensationspresse | sensational press |
| Korrelationsanalyse | correlation analysis |
| Oxidationsflamme | oxidizing flame |
| Rotationsbrache | fallow |
| Kombinationszange | combination pliers engineers pliers |
| Erosionsfläche | scour |
| Benzinflasche | gasoline bottle |
| Sauerstoffflasche | oxygen bottle |