| ESR | Einstein stoke radius; electric skin resistance; electron spin resonance; equipment service report; ... |
|---|---|
| FAR | Federal acquisitions regulation; fractional albumin rate; fresh bone marrow |
| FCR | flexor carpi radialis; fractional catabolic rate |
| FDR | fractional disappearance rate |
| FER | flexion, extension, rotation; fractional esterification rate |