| DVIU | direct-vision internal urethrotomy |
|---|---|
| FADIR | flexion in adduction and internal rotation |
| FIUO | for internal use only |
| IA | ibotenic acid; immune adherence; immunoadsorbent; immunobiologic activity; impedance angle; indolami... |
| IAC | image analysis cytometry; ineffective airway clearance; internal auditory canal; interposed abdomina... |