| PGO | ponto-geniculo-occipital [spike] |
|---|---|
| PSP | pancreatic spasmolytic peptide; paralytic shellfish poisoning; parathyroid secretory protein; period... |
| SIS | semantic indexing system; serotinin irritation syndrome; simian sarcoma; simulator-induced syndrome;... |
| SSB | short spike burst; sicca syndrome B; single-strand break; single-stranded binding [protein]; stereos... |
| SW | seriously wounded; short waves; sinewave; slow wave; soap and water; social worker; spike wave; spir... |