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An aircraft, especially a balloon or dirigible, deriving its lift from the buoyancy of surrounding air rather than from aerodynamic motion.
[French aérostat : Greek āero-, aero-; see aero- + Greek statos, standing; see stato-.]
aer′o·stat′ic, aer′o·stat′i·cal adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Aeronautics) a lighter-than-air craft, such as a balloon
[C18: from French aérostat, from aero- + Greek -statos standing]
ˌaeroˈstatic, ˌaeroˈstatical adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
any lighter-than-air aircraft, as a balloon or dirigible.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.