| A-mode | amplitude mode; amplitude modulation |
|---|---|
| M-mode | motion mode |
| BCM | B-cell maturation; birth control medication; blood-clotting mechanism effects; body cell mass; body ... |
| CDC | calculated date of confinement; cancer diagnosis center; capillary diffusion capacity; cell division... |
| ATM | abnormal tubular myelin; acute transverse myelopathy; asynchronous transfer mode; atmosphere |