| Zho?ngguo? Ke?xue? Yua`n | Academic & Science |
| Centre of African Studies | Academic & Science |
| Curriculum Administration System | Academic & Science |
| Committee on Atmospheric Sciences | Academic & Science |
| Commission for Atmospheric Sciences | Academic & Science |
| California Academy of Sciences | Academic & Science |
| Campus Auxiliary Services | Academic & Science |
| Campus Automation System | Academic & Science |
| Centre for Applied Statistics | Academic & Science |
| Course Applicability System | Academic & Science |
| Certificate of Advanced Study | Academic & Science |
| Constructed Academic Studies | Academic & Science |
| Coursework Administration System | Academic & Science |
| Committee on African Studies | Academic & Science |
| Certificate in Applied Science | Academic & Science |
| Centre for Animal Science | Academic & Science |
| China Academy of Science | Academic & Science |
| Chicago Academy of Sciences | Academic & Science |
| Catgut Acoustical Society | Academic & Science |
| Chinese Academy of Sciences | Academic & Science |
| 中国科学院 | Academic & Science |
| Zhōngguó Kēxué Yuàn | Academic & Science |
| Caribbean Academy of Sciences | Academic & Science |
| Culture Awareness Society | Academic & Science |
| Children's Aid Society | Academic & Science |
| Soci?·Canadienne des Anesth?iologistes | Academic & Science |
| Current Awareness Service | Academic & Science |
| Chinese Accounting Standards | Accounts and Finance |
| Comprehensive Annual Statement | Accounts and Finance |
| Composite Accounting System | Accounts and Finance |
| Cost Accounting Standards | Accounts and Finance |
| Casablanca | Airport Code |
| Central Account Section | Banking |
| Cost Allocation Sheet (German BAB Betriebsabrechnungsbogen) | Business |
| Customer Application Support | Business |
| Casualty Actuarial Society | Business |
| Crank Angle Sensor | Business |
| Combined Alternator Starter | Business |
| A. M. Castle & Company | Business |
| Crusader Holdings NL | Business |
| Certified Annuity Specialist | Business |
| Coating Application Specialist | Business |
| Computer-Aided Selling | Business |
| Claims Assistance Service | Business |
| Computer Aided Service | Business |
| Cascades, Inc. | Business |
| Chemical Abstract Service | Chemistry |
| Charged Atom System | Chemistry |
| Chemical Abstracts Service | Chemistry |
| Chemical Abstract Services | Chemistry |
| Crossroads Adoption Services | Community |
| Connecticut Association Of Schools | Community |
| Community Association Services | Community |
| Community Attendant Services | Community |
| Cinema Audio Society | Community |
| Channel Associated Signaling | Computer and Networking |
| Customer Alert Signal | Computer and Networking |
| Column Address Select | Computer Assembly Language |
| Column Access Select | Computer Assembly Language |
| Computed Answer Substitution | Computing |
| Common Authorization System | Computing |
| Computer Aided Systems | Computing |
| Customer Administrative Services | Computing |
| Commercially Available Software | Computing |
| Content Addressed Storage | Computing |
| Comma Delimited Ascii | Computing |
| Cost Accounting System | Computing |
| Circuit Associated Signaling | Computing |
| Coordinating Address Space | Computing |
| Cpe Alerting Signal | Computing |
| Certification Authorities | Computing |
| Configuration Assurance Solution | Computing |
| Citrix Access Suite | Computing |
| Corporate Account Space | Computing |
| Content Adaptors | Computing |
| CPE (Customer Premise Equipment) Alert Signal | Computing |
| Conditional Access System | Computing |
| Catalog Address Space | Computing |
| Clean Access Server | Computing |
| Communication Application Software | Computing |
| Citrix Activation System | Computing |
| Channel Access Sublayer | Computing |
| Centralized Attendant Service | Computing |
| Centralized Attendant System | Computing |
| Communicating Application Specification | Computing |
| Computerized Autodial System | Computing |
| Content Aware Storage | Computing |
| Compute Appliances | Computing |
| Computer Assisted Surgery | Computing |
| Computer Aided Styling | Computing |
| Computer Aided Synthesis | Computing |
| Computer Aided Standardization | Computing |
| Computerized Analysis and Simulation | Computing |
| Computer Aided Software | Computing |
| Computer Aided Support | Computing |
| Citrix Analytics Service | Computing |
| Computer Algebra Systems | Computing |
| Computing At School | Computing |
| Cashaa | Cryptocurrency |
| Certificate of Advanced Studies | Educational Degree |
| College of Arts and Science | Educational Institute |
| College of Arts and Sciences | Educational Institute |
| Column Address Strobe | Electronics |
| C + Asm Language Source (turbo C) | File Type |
| Creativity Action Service | General |
| Circuits and Systems | General |
| Creativity Action and Service | General |
| Confirmation of Acceptance for Studies | General |
| Center for Austrian Studies | General |
| Check And Set | General |
| Center for Advanced Study | General |
| Collision Avoidance System | General |
| Connecticut Avenue Securities | General |
| Creativity Activity Service | General |
| Creativity Activity and Service | General |
| Customer Account Services | General |
| Creatvity Action Service | General |
| Create A Sim | General |
| Conditional Audio System | General |
| Clean And Simple | General |
| Cebu Auto Show | General |
| Car Alarm System | General |
| Car Access System | General |
| Claims Administrative Services | General |
| Central Authentication System | General |
| Continuous Analysis and Surveillance | General |
| Cost Analysis Sheet | General |
| Control Actuation System | General |
| Constrained And Strained | General |
| Create A Stir | General |
| Create A Size | General |
| Comfort Access System | General |
| Creep Aid System | General |
| Chicago Auto Show | General |
| Continental Automotive Systems | General |
| Chery After-Sales Service | General |
| Combustion Analysis System | General |
| Cam Speed | General |
| Cam Sensor | General |
| Comfort Adaptive Suspension | General |
| Czech Automotive Society | General |
| Club de Automoviles Sport | General |
| Case Analysis System | General |
| Cigarettes After Sex | General |
| Clutch Activation Switch | General |
| Cold Advance Solenoid | General |
| Change Average Speed | General |
| Computer Aided System | General |
| City Assist System | General |
| Collision Avoidance Support | General |
| Club Amateurs Subaru | General |
| Cleveland Auto Show | General |
| Certified Automotive Solutions | General |
| Calya Sigra | General |
| Certified Auto Sales | General |
| Certified Automotive Specialist | General |
| Club de Coches Americanos del Sur | General |
| Clube Automovel Do Sul | General |
| Cab and Assembly | General |
| Camaro Sport | General |
| Calais Supreme | General |
| Complete Active Space | General |
| Civil, Architectural, & Structural | General |
| Computers Are Swine | General |
| Commercial Aviation Services | General |
| Control Augmetation System | Governmental |
| American Chemical Society Abstracts Service [SUBSTANCE NUMBER] | Governmental |
| Cash Accounting Standards | Governmental |
| Corporal Alternative Sentencing | Governmental |
| Council for the Advancement of Standards | Governmental |
| Conventional Activated Sludge | Governmental |
| Credential Assembly Service | Governmental |
| Childrens' Advocacy Services | Governmental |
| Commence Average Speed | Governmental |
| CHAS ROAD | Indian Railway Station |
| Certified Advertising Specialist | Jobs |
| Conjugate Anti-symmetric Similar | Maths |
| Complex Adaptive System | Maths |
| Computer Algebra System | Maths |
| carcinomas | Medical |
| Childhood Apraxia of Speech | Medical |
| Cardiac Adjustment Scale | Medical |
| Care Assessment Schedule | Medical |
| Carotid Angioplasty and Stenting | Medical |
| Carotid Artery Stenting | Medical |
| castrated | Medical |
| Central Alerting System | Medical |
| Central Anticholinergic Syndrome | Medical |
| Central Auditory System | Medical |
| Clinical Asthma Score | Medical |
| Cognitive Assessment Scale | Medical |
| Cold Agglutinin Syndrome | Medical |
| Community Accountancy Service | Medical |
| Congenital Alcohol Syndrome | Medical |
| Continuous Androgen Supression | Medical |
| Controls Assurance Statement | Medical |
| Coronary Artery Spasm | Medical |
| Coronary Artery Stenosis | Medical |
| Coronary Atherosclerosis | Medical |
| Clinical Assessment Service | Medical |
| Companion Animal Society (New Zealand) | Medical |
| Calcified Aortic Stenosis | Medical |
| Canadian AIDS Society | Medical |
| Canadian Andropause Society | Medical |
| Canadian Anesthesiologists’ Society | Medical |
| Cancer Attitude Survey | Medical |
| Carotid Artery Stenosis | Medical |
| Combat Ammunition System | Military and Defence |
| Casualty | Military and Defence |
| Civil Aviation Security | Military and Defence |
| Crisis Action System | Military and Defence |
| Close Air Support | Military and Defence |
| Contract Administration Services | Military and Defence |
| Clean Air System | Military and Defence |
| Chief of Air Staff | Military and Defence |
| Chinese Air To Surface | Military and Defence |
| Conversion Armor System | Military and Defence |
| Cadet Accountability System | Military and Defence |
| Controlled Access Signaling | Networking |
| Conference Application Server | Networking |
| Common Analysis Structure | Physics Related |
| Chief of the Air Staff | Regional |
| Central Asia | Regional |
| Central Authentication Service | Softwares |
| Context Aware Services | Softwares |
| Code Access Security | Softwares |
| Claim Administration System | Softwares |
| Calibrated Air Speed | Space Science |
| Command Augmentation System | Space Science |
| Control Augmentation System | Space Science |
| Court of Arbitration for Sport | Sports |
| Combined Antennae Services | Telecommunication |
| Carrier Activity Sensor | Telecommunication |