AT
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Template:Pp-pc Template:Wiktionary
AT or at may refer to: Template:TOC right
Geography
Austria
United States
- Atchison County, Kansas (county code)
- The Appalachian Trail (A.T.), a 2,180+ mile long mountainous trail in the Eastern United States
Elsewhere
- Antigua and Barbuda, World Meteorological Organization country code
- Ashmore and Cartier Islands (FIPS 10-4 territory code, and obsolete NATO country code)
- At, Bihar, village in Aurangabad district of Bihar, India
- Province of Asti, Italy (ISO 3166-2:IT code)
- Australia, LOC MARC code
Politics
- Awami Tahreek a left-wing Pakistani political party
Science and technology
Computing
- @ (or "at sign"), the punctuation symbol now typically used in e-mail addresses and tweets
- at (command), used to schedule tasks or other commands to be performed or run at a certain time
- IBM Personal Computer/AT
- AT (form factor) for motherboards and computer cases
- AT connector, a five-pin DIN connector for a keyboard
- AT Protocol, a decentralized social networking protocol by Bluesky
- The Hayes command set for computer modems (each command begins with the character string "AT")
Biology and medicine
- Anaerobic threshold, in physiology
- Análisis transaccional (Spanish for "transactional analysis"), a psychological method
- Antithrombin, a small protein molecule
- Ataxia–telangiectasia, an immunodeficiency disorder
- Athletic training
- Atrial tachycardia
Physics and chemistry
- 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
- Acceptance testing, in engineering
- Appropriate technology, an ideological movement to scale technology to be appropriate to its context
- Assistive technology, devices for people with disabilities
- Anti-tank warfare
- Automatic transmission, in vehicles
Other uses
- At, a preposition
- At (cuneiform), a cuneiform sign
- At, 1/100 of a Lao kip, a unit of currency
- AT (Template:Langx), a Ukrainian form of company, equivalent to joint-stock company
- Aarne–Thompson classification system, used to classify folktales
- Archive Team, a digital preservation group
- Aliança da Terra, a Brazilian non-governmental organization
- Alternative Tentacles, an independent record label
- Auckland Transport, New Zealand, a public transport agency
- Audiotool, a Digital audio workstation
- Autolinee Toscane, Italy, a public transport agency
- Aviation electronics technician (United States Navy), a job specialty
- Royal Air Maroc (IATA airline designator AT)
- A US Navy hull classification symbol: Fleet tug (AT)