radio_reflector has definitions from the fields of physics,astronomy
[ noun ] (physics,astronomy) astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources



Used in print

(Cornell H. Mayer, "Radio Emission of the Moon...)

In_spite of this , the very large radio_reflectors and improved amplifying techniques which are now becoming available should make it possible to observe the radio_emission of most of the planets in a_few years .