atto- - WordReference.com Dictionary of English

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- See Also:
- - attentive
  - attenuate
  - attenuator
  - attest
  - Attic
  - attic
  - Atticism
  - attire
  - attitude
  - attitudinize
  - atto-
  - attorn
  - attorney
  - Attorney General
  - attract
  - attractant
  - attraction
  - attractive
  - attribute
  - attributive
  - attrit
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atto-

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Concise Oxford English Dictionary © 2008 Oxford University Press:
atto- /ˈatəʊ/

▶combining form denoting a factor of 10⁻¹⁸: attowatt.

– origin from Dan. or Norw. atten ‘eighteen’.

'atto-' also found in these Oxford entries:

a

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