| Abbreviation | Definition |
|---|---|
| FAS | Functional Assessment System |
| FASF | Fore Arm Support Frame |
| FAST | Focused Abdominal Sonography For Trauma |
| FAST | Fortified Amino Scalp Therapy |
| FASTER | First And Second Trimester Evaluation Of Risk |
| FAT | Frustration Anxiety Tension |
| FAT | Frustration, Anxiety, and Tension |
| FB | Fingerbreadth |
| FB | Fixed Back |
| FB | Foot Binarity |
| FB | Foreign Body |
| FBAO | Foreign Body Airway Obstruction |
| FBC | Family Birthing Center |
| FBIP | Foreign Body In Penis |
| FBOA | Foreign Body Airway Obstruction |
| FBR | Fast Bone Regeneration |
| FBT | Fecal Blood Test |
| FC | Freeze Candidate |
| FC | Full Chest |
| FCA | Fracture, Complete, Angulated |