ground con trolled approaches

ground-con·trolled approach

[ground-kuhn-trohld]
noun Aeronautics.
a system in which an observer interprets radar observations of the position of an aircraft and transmits continuous instructions to its pilot for landing. Abbreviation: GCA
Also, ground-con·trol approach.


Origin:
1940–45

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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WordNet
ground-controlled approach

noun
aircraft landing in bad weather in which the pilot is talked down by ground control using precision approach radar 
WordNet® 3.0, © 2006 by Princeton University.
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00:10
Ground con trolled approaches is always a great word to know.
So is quincunx. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a fool or simpleton; ninny.
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