CAS

For the word, see Cas.

CAS can mean:

Institutions

• Chinese Academy of Sciences, the national academy for the natural sciences of China
• California Academy of Sciences, a museums of natural history, San Francisco, California, USA
• Casualty Actuarial Society, a professional society of actuaries in the United States
• Centre for Astrophysics and Supercomputing, a research center at Swinburne University in Australia
• Court of Arbitration for Sport, an international arbitration body set up to settle disputes related to sports
• Combined Associated Schools, an association of private schools in Sydney, Australia
• Swiss Alpine Club (abbreviated CAS in four non-English languages), a mountaineering club in Switzerland
• College of Arts and Sciences (disambiguation)

Computing

• CAS latency (column address strobe or column address select), a latency in reading computer memory
• Central Authentication Service, a single sign-on protocol
• Channel Associated Signaling, a type of communication signaling
• Code Access Security in the Microsoft .NET framework
• Compare-and-swap, a special CPU instruction
• Computer algebra system, a software program that facilitates symbolic mathematics
• Conditional access system, selective digital media transmission system
• Console access server, a device or service that provides access to the system console of a computing device
• Consumer alert system, a spyware/adware program
• Content-addressable storage, a data storage mechanism
• Cycle Accurate Simulator, a computer program that simulates a microarchitecture cycle-accurate

Science and medicine

• Calcium sulfide (CaS), a chemical compound
• Cassiopeia (constellation), standard astronomical abbreviation
• Chemical Abstracts Service, a division of the American Chemical Society which produces bibliographic and chemistry databases

• CAS registry number, unique numerical identifiers for chemical substances

• Cognitive Assessment System, an academic assessment test given to children
• Complete active space, in quantum chemistry, a type of classification for the molecular orbitals
• Complex adaptive system, special cases of complex systems
• Computer assisted surgery, use computer technology in surgery

Military

• Chief of the Air Staff, in some Commonwealth nations, the professional head of the air force
• Close air support, a military tactic whereby aircraft is in close proximity to friendly forces
• Combat armor suit, a specialized suit that provides powered armor
• Cost Accounting Standards, accounting requirements for larger defense and government contractors (United States)

Aerospace

• Calibrated airspeed, the airspeed shown by an airspeed indicator
• Crew Alerting System, the cockpit computer that issuses system warnings to the pilots.

Other

• Canadian Aboriginal Syllabics, characters used to write Algonquian, Inuit, and Athabaskan languages
• Certificate of Advanced Study, a post-master's academic certificate
• Children's Aid Society, a private charity in New York City
• Civil Aid Service, a Hong Kong Civil Aid agency
• Classic Arts Showcase, an American noncommercial satellite television channel promoting the fine arts
• Cowboy action shooting, a competitive shooting sport
• Creativity, Action, Service, the community service aspect of the International Baccalaureate Diploma Programme
• Cloud Appreciation Society, a group that promotes understanding and appreciation of clouds
• Crank Angle Sensor, a component used in an internal combustion engine
• Christman Air System (ICAO airline code), based in the United States
• Create-a-Superstar, a creation mode found in wrestling video games