An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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yocto- (y-)
  یوکتو-  
yokto-
Fr.: yocto-  

A metric prefix denoting 10-24. As of 2007, yocto- is the smallest SI prefix to be approved.

See also: From L. octo, Gk. okto “eight,” because it is equal to 1/10008.