| SIP | Sickness Impact Profile; slow inhibitory potential; surface inductive plethysmography |
|---|---|
| SmIg | surface membrane immunoglobulin |
| S-MUAP | surface-detected motor unit action potential |
| SP | sacroposterior; sacrum to pubis; salivary progesterone; schizotypal personality; semi-private [room]... |
| SPA | salt-poor albumin; sheep pulmonary adenomatosis; sperm penetration assay; spinal progressive amyotro... |