| Abbreviation | Definition |
|---|---|
| MCI | Migrating Corrosion Inhibitor |
| MCII | Material Cutting and Industrial Instrument |
| MCL | Materials Cutting List |
| MCL | Moving Contact Lubricant |
| MCLIP | Money Clips |
| MCM | Thousands of Circular Mils |
| MCO | Manufactuers Certificate of Origin |
| MCP | Manual Call Point |
| MCP | Medium Coarse Particleboard |
| MCP | Micro-Casted Piston |
| MCP | Multi Customer Products |
| MCRP | Mike Curcio Race Products |
| MCS | Multi-Colored Stemware |
| MCSF | Minimum Continuous Stable Flow |
| MCT | Micro Circuit |
| MCTC | Maisotsenko Combustion Turbine Cycle |
| MD | Maximum Differential |
| MD | Micro Dry |
| MD | Mnemonic Device |
| MDCB | Motor Driven Core Barrel |