Your Query of 'aa' Resulted in 2 Matches
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AA Tweet Definition of AA Like Definition of AA on Facebook
  1. Automobile Association
  2. Alcoholics Anonymous
  3. American Airlines
  4. A.A. (or A.'.A.'.) Esoteric Magickal order Astrum Argenteum, or Silver star, a magickal order.
  5. Antiaircraft
  6. Alzheimer's Association
  7. Armed Forces Americas (USPS abbreviation code)
  8. Affirmative Action
  9. African-American
  10. (chemistry): amino acid
  11. (military) assembly area
  12. (military) avenue of approach
  13. (poker) A starting hand in Texas hold 'em comprised of two aces
  • Dutch: ANWB (Netherlands); Touring, VTB-VAB (Belgium)
  • German: ADAC

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aa Tweet Definition of aa Like Definition of aa on Facebook
  1. (alternative spelling of, Ê»aÊ»Ä) 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.
  • 1859 - R. C. Haskell in American journal of science and arts, series XXVIII
  • : We...saw "pahoihoi" or solid lava forming, and also "" or clinkers.
  • 1883 - Clarence E. Dutton in the fourth Annual report of the United States Geological Survey
  • : The second form of the lavas is called by the natives a-a, and its contrast with pahoehoe is about the greatest imaginable. It consists mainly of clinkers sometimes detached, sometimes partially agglutinated together with a bristling array of sharp, jagged, angular fragments.
  • 1944' - Charles A. Cotton: Volcanoes as landscape forms''
  • : Cooling and solidification frequently takes a different lava flows, producing the clinker-like "" lava.
  • Translations: 
      Etymology: From Hawaiian ÊaÊÄ.

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