| RA | radioactive; ragocyte; ragweed antigen; rapidly adapting [receptors]; reactive arthritis; reciprocal... |
|---|---|
| RCM | radial contour model; radiographic contrast medium; red cell mass; reinforced clostridial medium; re... |
| RSM | risk screening model; Royal Society of Medicine |
| SPM | shocks per minute; spermine; subhuman primate model; suspended particulate matter; synaptic plasma m... |