| ISMED | International Society on Metabolic Eye Disorders ISMH International Society of Medical Hydrology |
|---|---|
| ISN | integrated service network; International Society of Nephrology; International Society of Neurochemi... |
| mIU | milli-international unit; one-thousandth of an international unit |
| SI | International System of Units [Fr. le Systeme International d'Unites]; sacroiliac; saline infusion; ... |
| FDI | F?d?ration Dentaire Internationale = International Dental Association |