
Indicated airspeed (IAS) is the airspeed read directly from the airspeed indicator on an aircraft, driven by the pitot-static system. It uses the difference between total pressure and static pressure, provided by that system, to either mechanically or electronically measure dynamic pressure. The dynamic pressure includes terms for both density and...
Found on
http://en.wikipedia.org/wiki/Indicated_airspeed

Airspeed as indicated on the airspeed indicator with no corrections applied.
Found on
http://www.sportpilot.org/learntofly/glossary.html

The airspeed as shown by an airspeed indicator. The reading only agrees with the true airspeed if atmospheric conditions are 'standard'. As height increases the indicated airspeed falls below the true airspeed.
Found on
https://www.encyclo.co.uk/local/20784
No exact match found.