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Look up AST, Ast, ast in Wiktionary, the free dictionary.

AST is a three-letter abbreviation that stands for a number of different things.

In science and technology

• Aspartate transaminase, an enzyme associated with liver parenchymal cells
• Abstract syntax tree, a finite, labeled, directed tree used in computer science
• Asynchronous System Traps, a mechanism used in several computer operating systems
• Andrew S. Tanenbaum, a computer scientist (often uses this acronym as his identifier)

In maths

• Alternating series test, a method used to prove that infinite series of terms converge
• Alternative set theory, an alternative mathematical approach to the concept of set

Organisations and companies

• AST Research, Inc., a defunct personal computer manufacturer
• Association for Software Testing, a nonprofit organization dedicated to advancing software testing
• AST Sports Science, Inc. , a leading sports nutrition research and development company

In education

• ACT Scaling Test, a series of aptitude tests taken by Year 12 students in ACT, Australia
• Alpha Sigma Tau, a national collegiate sorority of the United States
• Atlantic School of Theology, a ecumenical university in Atlantic Canada
• Conroe ISD Academy of Science and Technology, a specialized magnet school of science and technology in Conroe, Texas
• Avalanche Skills Training, a standardized form of avalanche training in Canada

In politics and government

• Office of Commercial Space Transportation, a branch of the US Federal Aviation Administration
• Aviation Survival Technician, the US Coast Guard's airborne "rescue swimmers"
• Alaska State Troopers, the state police force for the State of Alaska
• Action Sociale Tchadienne, a defunct Chadian political party

In transport

• Astoria Regional Airport, a public airport of Clatsop County, Oregon, USA (FAA Identifier: AST)
• Aston railway station, a railway station in Aston in Birmingham, England (National Rail code: AST)

Time zones

• Atlantic Standard Time — UTC-4
• Alaska Standard Time — UTC-9
• Arabia Standard Time — UTC+3

Other uses

• Assured shorthold tenancy, a form of Assured tenancy with limited security of tenure
• Asturian language, a Romance language spoken in Asturias, Spain (ISO 639 alpha-3, ast)

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Wikipedia content modification information:

• This page was last modified on 5 August 2008, at 17:32.

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