| LIFO | last in, first out |
|---|---|
| M-I | first meiotic metaphase |
| M1 | mitral first [sound]; myeloblast; slight dullness |
| 3-M [syndrome] | initials for Miller, McKusick, and Malvaux, who first described the syndrome |
| MI | first meiotic metaphase; maturation index; medical illustrator; medical informatics; medical inspect... |