| IRC | inspiratory reserve capacity; instantaneous resonance curve; International Red Cross; International ... |
|---|---|
| ISC | immunoglobulin-secreting cells; insoluble collagen; International Society of Cardiology; Internation... |
| ISE | inhibited sexual excitement; International Society of Endocrinology; International Society of Endosc... |
| ISI | infarct size index; initial slope index; injury severity index; Institute for Scientific Information... |
| ISMED | International Society on Metabolic Eye Disorders ISMH International Society of Medical Hydrology |