exa- - WordReference.com Dictionary of English

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- See Also:
- - ex post facto
  - ex silentio
  - ex-
  - ex-con
  - ex-directory
  - ex-service
  - ex-serviceman
  - ex-voto
  - ex-works
  - Ex.
  - exa-
  - exacerbate
  - exact
  - exacta
  - exacting
  - exaction
  - exactly
  - exaggerate
  - exalt
  - exaltation
  - exalté
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exa-

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Concise Oxford English Dictionary © 2008 Oxford University Press:
exa-/ˈeksə-/

▶combining form denoting a factor of 10¹⁸: exajoule.

– origin from (h)exa- (see hexa-), based on the supposed analogy of tera- and tetra-.

'exa-' also found in these Oxford entries:

E - yocto- - zepto-

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