Scientific & Educational Abbreviations and Acronyms
- ACAAcademy of Certified Archivists
- ACAAmerican Counseling Association
- ACAAmerican College of Apothecaries
- ACAAnti-Cardiolipin Antibodies
- ACAAttitude Controller Assembly
- ACAAmyloid Congophilic Angiopathy
- ACAAcrodermatitis Chronica Atrophicans
- ACAAdditional Chromosomal Abnormalities
- ACAAcrocentric Chromosome Association
- ACAAmerican Canyoneering Academy
- ACAAmerican Council on Alcoholism
- ACAAtacama Compact Array
- ACAAmerican Chichlid Association
- ACAAnhydrous Codeine Alkaloid
- ACAAlberta Conservation Association
- ACAAdvisory Committee on Athletics
- ACACAcetylacetonate
- ACACAcademic Computing & Advisory Committee
- ACACAAustralasian Curriculum Assessment and Certification Authorities
- ACACAAssignment of A Carboxylase Alpha
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