fineness

Definition 1

Unit of purity of a precious metal, measured in one-thousandths. A piece of gold marked '999 fine' indicates that it contains only 0.1 percent of other metal(s).

Definition 2

Relative measure of fiber size. For manufactured fibers it is expressed in denier or tes; for cotton, the mean fiber weight in micrograms per inch; for wool, the mean fiber width (diameter) in microns.


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