- Multi-Chip Module (MCM): An integrated circuit package that contains two or more interconnected chips.
- MCM is an abbreviation for thousands of circular mils, an old measurement of wire gauge. 1 MCM = 1 kcmil = 0.5067 square milimeters. A mil is 1/1000 inch. A wire 200 mils in diameter is 40 MCM.
- MCM is also used for "million cubic meters."
MCM is generally used for very large-diameter wire. Most wire uses AWG.
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