| Atmospheric Collection Equipment | Academic & Science |
| Antarctic Current Experiment | Academic & Science |
| Automotive Centre of Excellence | Academic & Science |
| Artificial Compound Entity | Academic & Science |
| Achievement Centred Environment | Academic & Science |
| Academic Center For Excellence | Academic & Science |
| Academic Community For Enrichment | Academic & Science |
| Academic And Career Excellence | Academic & Science |
| Academic Character Excellence | Academic & Science |
| Advanced Compatibility Engineering | Academic & Science |
| Aerosol Characterization Experiment | Academic & Science |
| Asociación Catalana de Estudiantes | Academic & Science |
| Accent and Conversational English | Academic & Science |
| Academic Career Excellence | Academic & Science |
| Adverse Childhood Experience | Academic & Science |
| Association of Collegiate Entrepreneurs | Academic & Science |
| Architecture Construction and Engineering | Academic & Science |
| Altruistic Campus Experience | Academic & Science |
| Advanced College Enrollment | Academic & Science |
| Assuring Competence in Engineering | Academic & Science |
| Academic Competition of Excellence | Academic & Science |
| Academic Core Enrichment | Academic & Science |
| Accumulated Cash Equivalence | Accounts and Finance |
| Accountability Creativeness and Efficiency | Accounts and Finance |
| Adjusted Current Earnings | Accounts and Finance |
| A Checking Experience | Accounts and Finance |
| Lanzarote | Airport Code |
| Army Centre of Education | Body of Indian Ministry of Defence |
| Automated Commercial Environment | Business |
| Air Circulating Embankment | Business |
| Assisted Competitive Employment | Business |
| Agile Commerce Execution | Business |
| Analyze Chart And Execute | Business |
| American Computer Estimating | Business |
| American Coal Enterprizes | Business |
| Access To Career Enrichment | Business |
| Accepting The Challenge Of Excellence | Business |
| Alternative Certification Educators | Business |
| Austria Cards Emv | Business |
| Air Canada Enterprises | Business |
| Access Competition And Etiquette | Business |
| Access Channel For Employees | Business |
| Advancing Canadian Entrepreneurship | Business |
| American Casualty Excess | Business |
| Achieving Customer Excellence | Business |
| Astounding Customer Excellence | Business |
| Association of Clinical Embryologists | Business |
| ACE Aviation Holdings, Inc. | Business |
| American Council on Education | Business |
| Advanced Engine Components, LTD. | Business |
| Accurate, Courteous, and Efficient | Business |
| Australian Club Entertainment | Business |
| Available Consultants and Entrepreneurs | Business |
| Arab Consulting Engineers | Business |
| Advanced Compatibility Engineering (Honda) | Business |
| Administrative Center of Expertise | Business |
| Adaptability, Cooperation, and Efficiency | Business |
| Austin Chess Enterprises | Business |
| Alice Calhoun Enterprises | Business |
| Acetate | Chemistry |
| Anticipative Continuing Education | Community |
| Avoc Continuing Education | Community |
| Activity Care and Education | Community |
| Anonymous Confederate Ensemble | Community |
| Adult and Community Education | Community |
| Aurally Coded English | Community |
| Advocate Caregiver and Educator | Community |
| Alliance for Catholic Education | Community |
| Accelerated Christian Education | Community |
| American Conservation Experience | Community |
| Aerospace Connections in Education | Community |
| Animated Communications Effectiveness | Community |
| Advanced Content and Enrichment | Community |
| Arkansas Community of Excellence | Community |
| American Classic Edition | Community |
| Advocacy For Community Employment | Community |
| AIDS Counseling and Education | Community |
| Activities Council of Eastview | Community |
| Accelerated Cooperative Education | Community |
| Airport Community Enthusiast | Community |
| Associated Choice and Excellence | Community |
| Advocacy and Communication for Everyone | Community |
| Achievement, Character, and Excellence | Community |
| Accessing Creative Expression | Community |
| Academic Creative Education | Community |
| Association of Communication Excellence | Community |
| Affordable Community Education | Community |
| Appreciation, Certification, and Education | Community |
| Academics, Citizenship, and Effort | Community |
| Art for Community Expression | Community |
| Assistance, Counseling, and Encouragement | Community |
| Achieving and Choosing Excellence | Community |
| Adventure Camaraderie And Entertainment | Community |
| Attend Class Everyday | Community |
| Aids Counseling Education | Community |
| Active Community Enrichment | Community |
| Advancing Creative Excellence | Community |
| Advanced Continuous Education | Community |
| Advanced Computer Entertainment | Community |
| Ashley Colum Entertainment | Community |
| Aviation, Communications, and Evangelism | Community |
| Action Community for Entrepreneurship | Community |
| Aviation Career Exploration | Community |
| Arts Council of England | Community |
| Awards For Cablecasting Excellence | Community |
| Alternative Cooperative Education | Community |
| Aviation Careers Education | Community |
| Appreciate and Celebrate Excellence | Community |
| Achievement Centered Education | Community |
| Alternatives for Community and Environment | Community |
| Alliance for Climate Education | Community |
| Association for Consultancy and Engineering | Community |
| Association of Community Employment | Community |
| Alliance of Beverage Cartons and the Environment | Community |
| Achievement Credentials And Evaluation | Community |
| Academically Committed Environment | Community |
| American Cultural Exchange | Community |
| Assistant Community Editor | Community |
| American Cinema Editors | Community |
| Advanced Coding Efficiency | Computer and Networking |
| Ascii Compatible Encoding | Computer Assembly Language |
| Advanced Components and Equipment | Computer Hardware |
| Application Computing Environment | Computing |
| Advanced Collection Environment | Computing |
| Adverse Channel Enhancements | Computing |
| Access Control Element | Computing |
| Advanced Cryptography Engine | Computing |
| Atm Circuit Emulation | Computing |
| Advanced Colour Contrast Enhancement | Computing |
| Agent Character Editor | Computing |
| Address Channel Enhancement | Computing |
| Additional Core Enhancement | Computing |
| Audio Card Enhancer | Computing |
| Arithmetic Controller Engine | Computing |
| Arbitrary Code Execution | Computing |
| Advanced Cluster Environment | Computing |
| Automatic Control Engine | Computing |
| Ati Driver Component | Computing |
| Automatic Calling Equipment | Computing |
| Advanced Communication Engine | Computing |
| Automatic Computing Engine | Computing |
| Access Connection Element | Computing |
| Automatic Content Extraction | Computing |
| Adaptive Colour and Contrast Enhancer | Computing |
| Accredited Center for Education | Computing |
| Autodesk Certified Expert | Computing |
| Allegro Crypto Engine | Computing |
| Apple Club Eindhoven | Computing |
| Applications Certified Expert | Computing |
| Association of Computer Engineers | Computing |
| Asian Cross-Border e-Commerce | Computing |
| Advantage Client Engine | Computing |
| Assured Computing Environment | Computing |
| Advanced Collaborative Environment | Computing |
| Access, Collaboration, and Equity | Computing |
| Asynchronous Communications Element | Computing |
| Advanced Computing Environment [obsolete] | Computing |
| Autodesk Certified Engineer | Computing |
| African, Caribbean, and European | Country Specific |
| American, Canadian, and English | Country Specific |
| ACENT | Cryptocurrency |
| After The Common Era | Earth Science |
| Amethyst Contrast Enhancer | Earth Science |
| Accelerated College Education | Educational Institute |
| Accelerated College Enrollment | Educational Institute |
| Adhiyamaan College of Engineering | Educational Institute |
| Achieving A College Education | Educational Institute |
| American College of Education | Educational Institute |
| Alternating Conditional Expectation | Electronics |
| Automatic Control Environment | Electronics |
| Advanced Combination Encoder | Electronics |
| Automatic Color Equalization | Electronics |
| Area Control Error | Electronics |
| Ace Or Winace Compressed File Archive | File Type |
| American Coaster Enthusiasts | General |
| American Coalition for Ethanol | General |
| Amazing Customer Experience | General |
| Access to Capital for Entrepreneurs | General |
| Aviation Camp Experience | General |
| Active Chic Eco | General |
| Austin Cheats Everyday | General |
| Active Cornering Enhancement | General |
| Air Cooled Engineering | General |
| Auto Club Europa | General |
| A Crappy Effort | General |
| AMX Certified Expert | General |
| All Camera Equipment | General |
| Achieving Commitment to Excellence | General |
| Advanced Clean Energy Vehicle | General |
| Automotive Conversion Engineering | General |
| Air Cooled Engine | General |
| Automotive Computerized Equipment | General |
| Atkinson Cycle Engine | General |
| Association of Car Enthusiasts | General |
| Advanced Car Eye | General |
| Arizona Corvette Enthusiasts | General |
| Automoviles Citroen Espana | General |
| Air Conditioning Equipment | General |
| Automatic Check Equipment | General |
| Alfa Club of Edmonton | General |
| Adiperkasa Citra Esemka | General |
| Advancement in Clinical Excellence | General |
| Advanced Combustion Efficiency | General |
| Automotive Cost Engineering | General |
| Automotive Commerce Exchange | General |
| Autoliv China Electronics | General |
| Automotive Consulting Engineers | General |
| Auto Collision Expert | General |
| Auto Collision Experience | General |
| Accredited Collision Repair Estimator | General |
| Automotive Content Experience | General |
| Autonomous Connected and Electric | General |
| Average Current Earnings | General |
| Advanced Combustion Engine | General |
| Ajax org Cloud9 Editor | General |
| Altamont Corridor Express | General |
| Ask Care and Escort | General |
| Cash Express | General |
| After Common Era | General |
| Actuator control electronics | General |
| All Champions Eliminated | General |
| App Configuration for Enterprise | General |
| Application Control Engine | General |
| Auto Club of Southern California Enterprise | General |
| Auto Car Expo | General |
| Auto Crimes Enforcement | General |
| Automotive Center of Expertise | General |
| Automotive Computing Excellence | General |
| Auto Channel Exclusive | General |
| Automotive Career Exploration | General |
| Automotive Compliance Education | General |
| Alliance for Coffee Excellence | Governmental |
| Alliance for Coffee | Governmental |
| AGOA Capacity Enhancement (US Department of Commerce Fellowship) | Governmental |
| Airport Capacity Enhancement | Governmental |
| Air Cleaning Engine | Governmental |
| Adverse Clinical Event | Governmental |
| Assessing Cost-effectiveness | Governmental |
| American Council on Exercise | Governmental |
| Appetite Control and Energy | Governmental |
| Action Community Empowerment | Governmental |
| Advanced Court Engineering | Governmental |
| Advanced Computing Environment | Information Technology |
| Acuerdo de Complementación Económica | International |
| κοινοτικές ενέργειες για το περιβάλλον | International |
| A Crappy E-mail | Internet |
| Available Consultants and Executives | Jobs |
| Associate Career Enhancement | Jobs |
| Adobe Certified Expert | Jobs |
| Aruba Certified Expert | Jobs |
| Autocad Certified Expert | Jobs |
| Advanced Coset Enumerator | Maths |
| Ambient Computational Environment | Maths |
| Analyzing Combination Effects | Maths |
| Adverse Childhood Experiences | Medical |
| All Cotton Elastic | Medical |
| An individual who is asexual within the lgbtq+ community. | Medical |
| Antegrade Continence Enema | Medical |
| Alzheimer's Care and Enrichment | Medical |
| Angiotensin Converting Enzyme | Medical |
| acentric | Medical |
| acetaldehyde | Medical |
| acetaminophen | Medical |
| acetic | Medical |
| Acute Care for Elders | Medical |
| Acute Cerebral Encephalopathy | Medical |
| Addenbrooke’s Cognitive Examination | Medical |
| Adrenal Cortical Extract | Medical |
| Alternative Care for the Elderly | Medical |
| American College of Epidemiology | Medical |
| angiotensin-converting enzyme (CD143) | Medical |
| Approved Continuing Education | Medical |
| Aspirin and Carotid Endarterectomy | Medical |
| Awareness Choice Experience | Medical |
| Achievements in Clinical Excellence | Medical |
| Assessment of Comprehension and Expression | Medical |
| All Cotton Elastic (Usually Bandage or Wrap) | Medical |
| Arthritis Control Electrostimulator | Medical |
| A Cool Experience | Messaging |
| Asiancycleexpress | Messaging |
| Asas (all-source Analysis System) Collateral Enclave | Military and Defence |
| Armored Combat Earth-mover | Military and Defence |
| Armored Combat Excavator | Military and Defence |
| Allied Command Europe | Military and Defence |
| Analysis and Control Element | Military and Defence |
| Aviation Combat Element | Military and Defence |
| Assistant Chief of Engineers | Military and Defence |
| Airborne Command Element | Military and Defence |
| Airborne Communications Electronics | Military and Defence |
| Army Combat Earth-mover | Military and Defence |
| Aviation Council Emeritus | Military and Defence |
| Avión De Combate Europeo | Military and Defence |
| Aviation Career Education | Military and Defence |
| Aerobatic Competency Evaluator | Military and Defence |
| A Ceased Explosion | Military and Defence |
| Air Force Airborne Command Element | Military and Defence |
| Air Combat Element | Military and Defence |
| Aviation Combat Element, United States Marine Corps | Military and Defence |
| Adaptive Correlation Evaluator | Military and Defence |
| Access Control Entry | Networking |
| Address Correction and Encoding | Networking |
| Access Collaboration Equity | Networking |
| Action Construction Equipment Limited | NSE Company Symbol |
| Acoustic Compliance Enhancement | Physics Related |
| Lanzarote, Canary Islands | Regional |
| Achinese | Regional |
| Adult Community Education | Regional |
| African Cultural Exchange | Regional |
| Ashepoo, Combahee, and Edisto Railroad | Regional |
| Anti Chop Eye | Softwares |
| Active Content Engine | Softwares |
| Adobe Color Engine | Softwares |
| Application Connection Extension | Softwares |
| Applications, Connections, and Extensions | Softwares |
| Automated Chatting Engine | Softwares |
| Advanced Composition Explorer | Space Science |
| Apollo Checkout Equipment | Space Science |
| Agility, Challenge, and Expertise | Sports |
| Adventure Camaraderie Entertainment | Sports |
| Annual Catch Entitlement | Sports |
| Athlete Career and Education | Sports |
| Athletics Career Education | Sports |
| Achievement of Clubbing Excellence | Sports |
| American Cheer Express | Sports |
| Academy of Cycling Excellence | Sports |
| Aibd (association of International Bonds Dealers), Cedel, Euroclear | Stock Exchange |
| Adaptive Communication Environment | Telecommunication |
| After Christian Era | Time |
