aa
UK /ˈɑː.ɑː/ · US /ˈɑ.ɑ/ noun, pronoun, proper noun
Forms AAs AAing AAed a'a 'a'a a-a a aa a-aa
- noun (volcanology) A form of lava flow associated with Hawaiian-type volcanoes, consisting of basaltic rock, usually dark-colored with a jagged and loose, clinkery surface. Compare pahoehoe.
- pronoun (Northumbria, personal) I.
- noun (medicine) Prescription notation: The stated amount of each of the substances is to be used in the compounding of the prescription
- noun A member of Alcoholics Anonymous.
- noun An AA battery (energy-storage device).
- proper noun (US, baseball) Double-A: the second-highest level of play in Minor League Baseball after Triple-A (AAA).
- proper noun (US, military) USPS military code of Armed Forces – Americas.
- proper noun A river in northern France, flowing 93 km from near Bourthes, Pas-de-Calais department into the North Sea near Gravelines, Nord department.
- proper noun A small river in the Netherlands, flowing 72 km from near Nederweert, Limburg into the Dieze at 's-Hertogenbosch, North Brabant.
- proper noun A tributary of the Möhne river in North Rhine-Westphalia, Germany, part of the Rhine basin.
- proper noun A tributary of the Nether river in North Rhine-Westphalia, Germany, part of the Weser basin.
- proper noun A tributary of the Werre river in North Rhine-Westphalia, Germany, part of the Weser basin.
- proper noun A village in Ida-Viru County, northern Estonia, on the Gulf of Finland.
- proper noun A surname from Norwegian.
Synonyms
Etymology
From Ancient Greek ἀνά (aná, “of each (in sequence)”).
Abbreviation.
Compare pp.
Contraction.
Sources: Wiktionary · WordNet 3.0 — from the Wiktionary entry “aa”, CC BY-SA 4.0. Details