A unit of length equal to 0.001 inch, or one one-thousandth of an inch, used for measuring wire diameters or paper thicknesses. The word mil is derived from the Latin word millesimus, meaning "thousandth."
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A unit of length equal to 0.001 inch, or one one-thousandth of an inch, used for measuring wire diameters or paper thicknesses. The word mil is derived from the Latin word millesimus, meaning "thousandth."