| km2 | square kilometer |
|---|---|
| kMc | kilomegacycle |
| kMc/s | kilomegacycles per second |
| KMEF | keratin, myosin, epidermin, and fibrin |
| kmps | kilometers per second |
| KMS | kabuki make-up syndrome; knowledge management system; kwashiorkor-marasmus syndrome |
| KMV | killed measles virus vaccine |
| Kn | knee; Knudsen number |
| kN | kilonewton |
| kn | knee |