| ISD | Inter-Spinous Distance |
|---|---|
| FS | factor of safety; Fanconi syndrome; Felty syndrome; fibromyalgia syndrome; field stimulation; Fisher... |
| SENSOR | Sentinel Event Notification System for Occupational Risks |
| SISS | Sentinel Injury Surveillance System [for Gunshot and Stab Wounds] small inducible secreted substance... |
| AHP | accountable health plan or partnership; acute hemorrhagic pancreatitis; after hyperpolarization; air... |