| Abbreviation | Definition |
|---|---|
| IT | immature teratoma |
| IT | immune tolerance |
| IT | immunotoxin |
| IT | induction therapy |
| IT | inferior temporal |
| IT | inferior turbinate |
| IT | inferotemporal |
| IT | insulin therapy |
| IT | intention tremor |
| IT | intermediate trophoblast |
| IT | intermittent traction |
| IT | interstitial tissue |
| IT | intertrochanteric |
| IT | intradermal test |
| IT | intrathecal |
| IT | ischial tuberosity |
| ITK | inducible tyrosine kinase |
| ITK | Insight Toolkit |
| ITK | Interoperability Toolkit |
| ITP | idiopathic thrombocytopaenic purpura |