firs - Fran
- first aid
- first cranial nerve
- first cuneiform
- first dentition
- first filial generation
- first intention
- first metacarpal bone
- first nerve
- first responder
- first rib
- first stage of labor
- first-dollar coverage
- first-order change
- first-order kinetics
- first-state cementoma
- fish poisoning
- fish skin disease
- fish tapeworm infection
- Fishberg concentration test
- fission
