Aas

1. A village in southwest France, in the Ossau valley of the Pyrenees.
2. A surname from Norwegian.

1. abbreviationinitialismanthropologyInitialism of Australian Anthropological Society.
2. abbreviationinitialismarachnologyInitialism of American Arachnological Society, a society of amateur and professional arachnologists.
3. abbreviationinitialismspace flightInitialism of American Astronautical Society, an independent scientific and technical group in the United States.
4. abbreviationinitialismastronomyInitialism of American Astronomical Society, a United States society of professional astronomers.
5. AustraliaabbreviationinitialismsciencesInitialism of Australian Academy of Science, an independent, government-endorsed society with the aim of promoting science.
6. abbreviationinitialismbiotechnologyInitialism of All-America Selections, an organization that promotes development of new garden seed varieties.
7. abbreviationinitialismhealthInitialism of Air Ambulance Service, a UK charity.
8. abbreviationinitialismhelpInitialism of Assyrian Aid Society.
9. abbreviationinitialismhuman rightsInitialism of American Anti-Slavery Society.
10. abbreviationinitialismgovernmentInitialism of Ansar al-Sunna, or Jamaat Ansar al-Sunna, a militant group operating in Iraq.
11. abbreviationinitialismhuman sciencesInitialism of American Association of Suicidology, an American nonprofit suicide prevention organization.
12. abbreviationinitialismmedicineInitialism of Association for Academic Surgery.
13. abbreviationinitialismgovernmentInitialism of Arnold Air Society, a professional honorary service organization for Air Force officer candidates.
14. abbreviationinitialismnatural sciencesInitialism of Atomic Absorption Spectroscopy.
15. abbreviationinitialismresearchInitialism of American Antiquarian Society, an American society and national research library.
16. abbreviationinitialismresearchInitialism of Association for Asian Studies.
17. abbreviationinitialismresearchInitialism of Assyrian Academic Society.
18. abbreviationinitialismsciencesInitialism of African Academy of Sciences, an Africa-wide scientific organization.

plural AASs

1. abbreviationcountableinitialismuncountableaeronauticsInitialism of Advanced Automation System, a system for radar control of transoceanic air corridors.
2. abbreviationcountableinitialismuncountablegeometryInitialism of angle-angle-side triangular congruency.
3. abbreviationcountableinitialismuncountablebiochemistryInitialism of anabolic–androgenic steroid.
4. abbreviationcountableinitialismuncountableInitialism of acute aortic syndrome.

1. pluralplural of AA

1. indicativepresentsingularthird personthird-person singular simple present indicative of AA