| Term | Full Form | Definition | Meaning |
|---|---|
| m | metre |
| M | Manual |
| M | Male |
| M | Millennium |
| m | Minute |
| M | Manual |
| M | Motorsport |
| M | Medium |
| m | Mass (as in E=mc^2) |
| M | Macy’s, Inc. |
| M | Mature |
| M | 1000 (Roman numeral) |
| m | Milli |
| M | Mega |
| m | mobile |
| M | Motor |
| M | Manchester |
| M | Mature (Age 17+) |
| M | Chief of the British Secret Service |
| M | Munich |
| M | Mach number |
| M | Methionine |
| M | Mean anomaly |
| M | Up to 81 mph |
| M-DISC | Millennial Disc |