| Abbreviation | Definition |
|---|---|
| INC | Innovating Nurturing Commercialising |
| IND | Independent |
| IND | Investigational New Drug |
| INDF | Indigestible Neutral Detergent Fiber |
| INF | Infant |
| INF | Infarction |
| INF | Infected |
| INF | Inferior |
| INF | Infusion, Inferior |
| INFS | Integrative Nuclear FGFR Signaling |
| INH | Inhaler(s) |
| INH | Isoniazid |
| INJ | Inject |
| INJ | Injectable |
| INJ | Injection |
| INJ | Injury |
| INK | Injury not known |
| INKT | Invariant Natural Killer T |
| INR | Inner |
| INR | Intermittent |