| MDI | Manic(Mood) Depressive Illness Metered-dose inhaler |
|---|---|
| MDI | manic-depressive illness; metered dose inhaler; multiple daily injection; Multiscore Depression Inventory |
| MDIA | multidimensional interaction analysis |
| MDII | Multiple Daily Insulin Injections |
| MDIPT | Multicenter Diltiazem Postinfarction Trial |
| MDIS | medical diagnostic imaging support; medical diagnostic imaging system |
| MDIT | mean disintegration time |