| M abbr. | |
| comp. | M |
| med. | morgan; morgan unit; genetic map unit; map unit |
| Men abbr. | |
| comp. | menu |
| m abbr. | |
| construct. | evaporative tower; wet tower |
| μm abbr. | |
| med. | micrometer; μm |
| Falltest abbr. | |
| gen. | drop test |
|
9 : 107 phrases in 32 subjects |
| Agriculture | 1 |
| Alternative dispute resolution | 1 |
| American usage, not spelling | 1 |
| Biology | 2 |
| British usage, not spelling | 1 |
| Business | 1 |
| Chemistry | 12 |
| Communications | 6 |
| Computers | 2 |
| Construction | 1 |
| Education | 5 |
| Electric motors | 2 |
| Environment | 1 |
| Finances | 1 |
| Foreign trade | 2 |
| General | 21 |
| Human rights activism | 1 |
| Information technology | 2 |
| Insurance | 2 |
| Law | 8 |
| Mathematics | 1 |
| Medical | 6 |
| Microsoft | 2 |
| Mining | 1 |
| Natural resourses and wildlife conservation | 2 |
| Nuclear physics | 8 |
| Optics branch of physics | 1 |
| Patents | 8 |
| Social science | 1 |
| Statistics | 1 |
| Technology | 2 |
| Transport | 1 |