radio direction finder
noun
a navigational aid establishing a fix by means of the bearings of two known radio stations. Abbreviation: RDF
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Origin of radio direction finder
First recorded in 1920–25
Words nearby radio direction finder
radiocurable, radiodense, radiodensity, radiodermatitis, radiodiagnosis, radio direction finder, radioelement, Radio Free Europe/Radio Liberty, radiofrequency, radio galaxy, radiogenic
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020