An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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micrometer
  ریز‌سنج  
riz-sanj
Fr.: micromètre  
  1. A screw thread device used to make accurate physical linear measurements.
  2. Same as → micron.

See also: → micro-; → -meter.