| IFS | interstitial fluid space |
|---|---|
| IFV | interstitial fluid volume; intracellular fluid volume |
| IIP | idiopathic interstitial pneumonia; idiopathic intestinal pseudo-obstruction; increased intracranial ... |
| IK | immobilized knee; immune body [Ger. Immunekorper]; Infusoria killing [unit]; interstitial keratitis |
| ILD | interstitial lung disease; intraoperative localization device; ischemic leg disease; ischemic limb d... |