AT or at may refer to:

Geography

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Austria

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  • Austria (ISO 2-letter country code)
  • .at, Internet country code top-level domain

United States

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Elsewhere

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Politics

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Science and technology

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Computing

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Biology and medicine

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Physics and chemistry

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  • Astatine (symbol At), a chemical element
  • Ampere-turn (symbol A t), an International System of Units (MKS) unit of magnetomotive force
  • Attotesla (symbol aT), 10−18 tesla, an SI derived unit of magnetic flux density
  • Technical atmosphere (symbol at), a physical unit of pressure

Other uses in science and technology

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Other uses

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See also

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