Micron (noun)

1. A unit of measurement of length equal to one millionth of a meter (10^-6 m).
2. A unit of length that is equal to one millionth of a meter (1/1,000,000 meter or 1/25,400 inch).

Origin:

From the greek μῑκρος (mikros) meaning "small".

Examples:

1. The size of the particles is measured in microns.
2. The human hair is about 100 microns in diameter.
3. The resolution of the image is measured in microns.
4. The width of the wire is measured in microns.
5. The microprocessor's features are measured in microns.