exa- Word Origin

  1. a combining form used in the names of units of measure equal to one quintillion (1018) of a given base unit: exabyte.

Origin of exa- probably ≪ Greek exō- outside, out of British Dictionary definitions for exa- exa- prefix

  1. denoting 10 18exametres Symbol: E

exa- in Medicine exa- pref.

  1. One quintillion (1018):exagram.

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