1. basaltic lava having a rough surface.

  1. Fellow of the American Academy.

  1. American Academy of Sciences.
  2. Associate in Applied Science.


  1. a volcanic rock consisting of angular blocks of lava with a very rough surface

abbreviation for

  1. ana 1

abbreviation for

  1. Alcoholics Anonymous
  2. anti-aircraft
  3. Architectural Association
  4. (in Britain) Automobile Association
  5. (in Britain) Advertising Association

symbol for

  1. (in Britain, formerly) a film that may not be shown publicly to a child under fourteen


  1. Alcoholics Anonymous
  2. amino acid
  3. aminoacyl

  1. A type of lava having a rough, jagged surface. It is relatively slow moving in its molten state, advancing in the form of massive blocks with fissured and angular surfaces that ride on a viscous interior. The blocks range in size between the size of a football and the size of a house. See Note at pahoehoe.
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