aas

noun

1. basaltic lava having a rough surface.

1. Fellow of the American Academy.

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

noun

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

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

abbr.

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.