[ ah-ah ]
/ ˈɑ ɑ /
basaltic lava having a rough surface.
Origin of aa
First recorded in 1855–60, aa is from the Hawaiian word ʿaʿā
Fellow of the American Academy.
Origin of A.A.S.1
From the New Latin word Academiae Americanae Socius
American Academy of Sciences.
Associate in Applied Science.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for aas
The communications between members of AQIM and AAS were important.Intercepts Show Attackers on U.S. Consulate in Benghazi Bragged to Al Qaeda|Eli Lake|September 28, 2012|DAILY BEAST
This clatter excepted and a few magnificent pairs of velvet breeches, the festival was the same as that at Aas.A Tour Through The Pyrenees|Hippolyte Adolphe Taine
/ (ˈɑːɑː) /
a volcanic rock consisting of angular blocks of lava with a very rough surface
Word Origin for aa
(in Britain) Automobile Association
(in Britain) Advertising Association
(in Britain, formerly) a film that may not be shown publicly to a child under fourteen
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
[ ä′ä ]
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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.