| PSF | peak scatter factor; peptide supply factor; point spread function; pseudosarcomatous fasciitis |
|---|---|
| SSR | site-specific recombination; somatosensory response; surgical supply room |
| SSU | self-service unit; sterile supply unit |
| UPS | ultraviolet photoelectron spectroscopy; uninterruptible power supply; uroporphyrinogen synthetase; u... |