from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A unit of cross-sectional measurement, especially of wire, equal to the area of a circle with a diameter of one mil.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The non-SI unit for measuring the cross-sectional area of an electrical conductor: 1 CM= area of a circle having diameter of 0.001 inch; use capitals to distinguish from centimeter; 0.000 506 7 sq millimeters.
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