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Dex may refer to:

Dictionary

dex

-noun

  1. (physics and astrophysics jargon) An order or factor of ten. When dealing with log to the base 10 transform of a number set the transform of 10, 100, and 1 000 000 is <math>\log_{10}(10) = 1</math>, <math>\log_{10}(100) = 2</math>, and <math>\log_{10}(1 000 000) = 6</math>, so the difference between 10 and 100 in base 10 is 1 dex and the difference between 1 and 1 000 000 is 6 dex.
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