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)

(aviation) Initialism of Advanced Automation System. (radar control of transoceanic air corridors) / (geometry) Initialism of angle-angle-side triangular congruency.

A river in northern France, flowing 93 km from near Bourthes, Pas-de-Calais department into the North Sea near Gravelines, Nord department.

(military) Initialism of armor., armament, and ammunition.

(military) Initialism of armor, armament, and ammunition.

plural of AA

present participle of AA

plural of AA tree

(computing) A form of balanced tree used for storing and retrieving ordered data efficiently, a variation of the red-black tree.