| Mat, mat | maternal [origin]; mature |
|---|---|
| MAT | Multifocal Atrial Tachycardia |
| A-MAT | amorphous material |
| BDC | Bazex-Dupre-Christol [syndrome]; burn-dressing change |
| BI | background interval; bacterial or bactericidal index; base-in [prism]; basilar impression; Billroth ... |