| SAR | scatter/air ratio; seasonal allergic rhinitis; sexual attitude reassessment; slowly adapting recepto... |
|---|---|
| TAR | thoracic aortic rupture; thrombocytopenia with absent radii [syndrome]; tissue-air ratio; total abor... |
| TAV | trapped air volume |
| ULPA | ultra low penetration air filter |
| USAFH | United States Air Force Hospital |