| CN | I to XII first to twelfth cranial nerves |
|---|---|
| D1 | diagonal one; first dorsal vertebra |
| F1, | F2 etc. first, second, etc., filial generation |
| FDI | first dorsal interosseous [muscle]; International Dental Federation [Federation Dentaire Internation... |
| FDLMP | first day of last menstrual period |