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Definition of American Association for the Advancement of Science
Medically reviewed by Min Clinic Staff | Updated: January 2026
American Association for the Advancement of Science: Spoken of as the "triple-AS", the American Association for the Advancement of Science is an organization concerned not only with the biomedical sciences but with all of the sciences. The AAAS publishes the weekly journal "Science", one of the more famous scientific periodicals. "Science" carries a wide range of new scientific information.