| FASC | free-standing ambulatory surgical center |
|---|---|
| FSOP | free-standing surgical outpatient facility |
| ICS | ileocecal sphincter; immotile cilia syndrome; impulse-conducting system; integrated case study; inte... |
| ISR | information storage and retrieval; Institute for Sex Research; Institute of Surgical Research; insul... |
| ISSI | interview schedule for social interaction; Israeli Study of Surgical Infections |