| Karyotyp | karyotype |
| Karnotit | carnotite |
| Karotin | carotene carotin |
| Karotte | baby carrot carrot |
| Karyopse | caryopsis |
| Haplotyp | haplotype |
| Eukaryote | eukaryote |
| Karait | Karaite |
| Karaitin | Karaite |
| Karbonat | carbonate |
| Kardone | cardoon |
| Karitiv | caritive case |
| Karlovac | Karlovac |
| Karosse | body |
| Kart | cart |
| Eukaryot | eukaryote |
| Karaoke | karaoke |
| Karat | carat karat |
| Karate | karate |
| Karbon | Carboniferous |