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noun, Astronomy.
a cosmic object or phenomenon, as a galaxy, pulsar, quasar, or the remnant of a supernova or of a galactic collision, that emits radio waves.
a celestial object, such as a supernova remnant or quasar, that is a source of radio waves


Read Also:

  • Radio-spectrum

    noun 1. the portion of the electromagnetic spectrum that includes radio waves. noun 1. the range of electromagnetic frequencies used in radio transmission, lying between 10 kilohertz and 300 000 megahertz

  • Radio-star

    noun, Astronomy Now Rare. 1. a radio source. noun 1. a former name for radio source

  • Radio-station

    noun 1. (def 8). noun 1. an installation consisting of one or more transmitters or receivers, etc, used for radiocommunications 2. a broadcasting organization

  • Radiostrontium

    [rey-dee-oh-stron-shee-uh m, -shuh m, -tee-uh m] /ˌreɪ di oʊˈstrɒn ʃi əm, -ʃəm, -ti əm/ noun, Chemistry. 1. .

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