noun

• A village in southwest France, in the Ossau valley of the Pyrenees.
• A surname from Norwegian.
• (anthropology) Initialism of Australian Anthropological Society.
• (arachnology) Initialism of American Arachnological Society (a society of amateur and professional arachnologists)
• (astronautics) Initialism of American Astronautical Society (an independent scientific and technical group in the United States)
• (astronomy) Initialism of American Astronomical Society (a United States society of professional astronomers)
• (Australia, sciences) Initialism of Australian Academy of Science (an independent, government-endorsed society with the aim of promoting science)
• (biotechnology) Initialism of All-America Selections (an organization that promotes development of new garden seed varieties)
• (health) Initialism of Air Ambulance Service (a UK charity)
• (help) Initialism of Assyrian Aid Society.
• (human rights) Initialism of American Anti-Slavery Society.
• (politics) Initialism of Ansar al-Sunna (or Jamaat Ansar al-Sunna, a militant group operating in Iraq)
• (medicine, psychology) Initialism of American Association of Suicidology (an American nonprofit suicide prevention organization)
• (medicine) Initialism of Association for Academic Surgery.
• (military) Initialism of Arnold Air Society (a professional honorary service organization for Air Force officer candidates)
• (physics) Initialism of Atomic Absorption Spectroscopy.
• (research) Initialism of American Antiquarian Society (an American society and national research library)
• (research) Initialism of Association for Asian Studies.
• (research) Initialism of Assyrian Academic Society.
• (sciences) Initialism of African Academy of Sciences (an Africa-wide scientific organization)
• (aviation) Initialism of Advanced Automation System. (radar control of transoceanic air corridors)
• (geometry) Initialism of angle-angle-side triangular congruency.
• (biochemistry) Initialism of anabolic–androgenic steroid.