| TLI | thymidine labeling index; total lymphatic irradiation; trypsin-like immune activity; Tucker-Lewis in... |
|---|---|
| TTI | tension-time index; time-tension index; timepto-intubation; torque-time interval; transtracheal insu... |
| MDI | Manic(Mood) Depressive Illness Metered-dose inhaler |
| ADI | Academy of Dentistry International; acceptable daily intake; AIDS-defining illness; allowable daily ... |
| AFRI | acute febrile respiratory illness |