| MAI | Mycobacterium Avium-Intracellulare |
|---|---|
| MAI | microscopic aggregation index; movement assessment of infants; multilevel assessment instrument; Mycobacterium avium intracellulare |
| MAIDS | mouse acquired immunodeficiency syndrome |
| MAIN | medication-induced, autoimmune, infectious, and neoplastic [diseases associated with antiphospholipid antibodies] |