There are 2 definitions of AA in English:

AA

Syllabification: AA

abbreviation

  • 1Alcoholics Anonymous.
  • 1.1Antiaircraft.
  • 1.2Administrative assistant.
  • 1.3Associate of Arts.
  • 1.4(Pronounced as double A) a dry cell battery size.

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Word of the day mage
Pronunciation: māj
noun
a magician or learned person

There are 2 definitions of AA in English:

aa

Syllabification: aa
Pronunciation: /ˈäˌä
 
/

noun

Geology
  • Basaltic lava forming very rough jagged masses with a light frothy texture. Often contrasted with pahoehoe.
    More example sentences
    • Roads of black ash traverse it, winding through the otherwise untraversable aa.
    • A serpentine flow meanders through formations of smooth pahoehoe lava and rough aa lava, the same forms common in basalt lavas.
    • Very different from jagged aa, pahoehoe is the other general texture of newly solidified lava.

Origin

mid 19th century: from Hawaiian’a-'a.

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