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The speed, especially of an aircraft, relative to the air.
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) the speed of an aircraft relative to the air in which it moves. Compare groundspeed
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
or air′ speed`,
the forward speed of an aircraft relative to the air through which it moves.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
The speed of an aircraft relative to its surrounding air mass. The unqualified term "airspeed" can mean any one of the following. a. calibrated airspeed--Indicated airspeed corrected for instrument installation error. b. equivalent airspeed--Calibrated airspeed corrected for compressibility error. c. indicated airspeed--The airspeed shown by an airspeed indicator. d. true airspeed--Equivalent airspeed corrected for error due to air density (altitude and temperature).
Dictionary of Military and Associated Terms. US Department of Defense 2005.
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995