Army Collaboration Environment
Army Combat Earth-mover
Army Combat Engineers
Arts Council of England
ASAS Collateral Enclave
ASCII Compatible Encoding
ASEAN Committee on Education
ASIC Compiler Environment
Ask Chief Everything
Aspirin and Carotid Endarterectomy
Assemblée Consultative Européenne
Assemblies, Components and Elements
Assessment and Conversion Environment
assessment of combat effectiveness
Asset Cost Elasticity
Assets and Certified Equipment
Assistant Corps of Engineers
Assisted Competitive Employment
Associated Computer Experts
Association for Computer Educators
Association for Consultancy and Engineering
Association for Continuing Education
Association for the Conservation of Energy
Association of Clandestine Enthusiasts
Association Of Collegiate Entrepreneurs
Association of Conservation Engineers
Association of Continuing Education
Association of Cost Engineers
Association of County Employees
Assured Computing Environment
Asynchronous Communication Element
Asynchronous Communications Element
Atlantic Center for the Environment
ATM Crossbar Element
Atmospheric Chemistry Experiment
atmospheric collection equipment
Atmospheric Compensation Experiment
Auckland College of Education
Audio Card Enhancer
Audio Compression/Expansion