| OAF | open air factor; osteoclast activating factor |
|---|---|
| RA | radioactive; ragocyte; ragweed antigen; rapidly adapting [receptors]; reactive arthritis; reciprocal... |
| RAFMS | Royal Air Force Medical Services |
| SAR | scatter/air ratio; seasonal allergic rhinitis; sexual attitude reassessment; slowly adapting recepto... |
| TA | alkaline tuberculin; arterial tension; axillary temperature; tactile afferent; Takayasu arteritis; t... |