1) Unit of area
Found on
https://www.crosswordclues.com/clue/circular-mil
A circular mil is a unit of area, equal to the area of a circle with a diameter of one mil (one thousandth of an inch). It corresponds to 5.067×10-4 mm². It is a unit intended for referring to the area of a wire with a circular cross section. As the area in circular mils can be calculated without reference to π, the unit makes conversion betwee...
Found on
http://en.wikipedia.org/wiki/Circular_mil
(cmil) The area of a circle with a diameter of one mil (1/1000 inch), used to describe the cross-sectional area of a conductor. One cmil equals approximately 0.0000008 square inches.
Found on
http://www.youngco.com/young2.asp?ID=4&Type=3
a unit used principally for measuring the cross-sectional area of wires, being the area of a circle having a diameter of one mil.
Found on
https://www.infoplease.com/dictionary/circular-mil
No exact match found.
