| SPAM | scanning photoacoustic microscopy |
|---|---|
| SR | sarcoplasmic reticulum; saturation recovery; scanning radiometer; screen; secretion rate; sedimentat... |
| STEM | scanning transmission electron microscope; Society of Teachers of Emergency Medicine |
| STM | scanning tunneling microscope; short-term memory; streptomycin |
| TPBS | three-phase radionuclide bone scanning |