| Abbreviation | Definition |
|---|---|
| MB | Master Blaster |
| MB | Mirror Box |
| MB | Multi-Bunch |
| MBCM | Mechanical Bar Cutting Machine |
| MBE | Mighty Big Enhancement |
| MBHD | Marques Brownlee High Definition |
| MBHE | Moving Bed Heat Exchanger |
| MBJ | J-type Mounting Bracket |
| MBL | Marine Boarding Ladder, Single rung |
| MBP | Mechanical Breakdown Protection |
| MBRT | MethyleneBlue dye Reduction Test |
| MBS | Mason Body System |
| MBS | Metzler Belt System |
| MBT | Maximum Brake Torque |
| MC | MagnoCube (a cube of magnets) |
| MC | Mint Condition |
| MCC | Motor Control Centre |
| MCC | Motor Control Circuit |
| MCC | Mammoth Cleaning Cartridge |
| MCCB | Molded Case Circuit Breaker |