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Definition of Airspeed

Babylon English

speed of an aircraft relative to the air through which it moves
Airspeed Definition from Business & Finance Dictionaries & Glossaries
BTS Transportation Expressions
The speed of an aircraft relative to its surrounding air mass. The unqualified term "airspeed", means one of the following. 1) Indicated Airspeed. The speed shown on the aircraft airspeed indicator. This is the speed used in pilot/controller communications under the general term "airspeed." 2) True Airspeed. The airspeed of an aircraft relative to undisturbed air. Used primarily in flight planning and en route portion of flight. When used in pilot/controller communications, it is referred to as "true airspeed" and not shortened to "airspeed." (FAA4)
By the Bureau of Transportation Statistics.
Airspeed Definition from Government Dictionaries & Glossaries
DOD Dictionary of Military Terms
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).
  
Source: U.S. Department of Defense, Joint Doctrine Division. ( About )
Airspeed Definition from Science & Technology Dictionaries & Glossaries
VFA-13 Aviation Glossary
The speed of an aircraft relative to its surrounding air mass. See: calibrated airspeed; indicated airspeed; true airspeed.
Airspeed Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
Airspeed is the speed of an aircraft relative to the air. Among the common conventions for qualifying airspeed are: indicated airspeed ("IAS"), calibrated airspeed ("CAS"), true airspeed ("TAS"), equivalent airspeed ("EAS") and density airspeed. During cruising flight at altitudes, airspeeds, and temperatures common for airliners, the four speeds trace a shape that looks like the mathematical square root symbol (v). Starting with indicated airspeed, calibrated is normally very close to the indicated airspeed, while equivalent is normally less than both indicated and calibrated, and true is normally higher than the other three.

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Airspeed Definition from Language, Idioms & Slang Dictionaries & Glossaries
WordNet 2.0

Noun
1. the speed of an aircraft relative to the air in which it is flying
(hypernym) speed, velocity