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radio beacon
radio beam
radio button
radio car
radio cassette
radio compass
radio-controlled
radio frequency
radio galaxy
radio interferometer
radio jet
radio source
radio spectrum
radio star
radio telescope
radio wave
radioactive
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radio galaxy
ra·di·o gal·ax·y (plural ra·di·o gal·ax·ies)


noun 
Definition:
 
galaxy emitting radio waves: a galaxy that is a strong source of radio waves
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