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microfinish ‎(plural microfinishes)

  1. a positive integer used as a measure of the smoothness of any surface; higher numbers indicating rougher surfaces
    • 1995 U.S. international Trade Commission - Certain Portable On-Car Disc Brake Lathes
      One cut is required and the microfinish will be somewhere in the range of 23 microns which is better than any other lathe on the market.