a galaxy that emits much more strongly in the radio part of the spectrum than does a typical galaxy.
a galaxy that is a strong emitter of radio waves
A galaxy that emits large amounts of radio energy. Radio galaxies are typically elliptical galaxies with large symmetrical lobes. The centers of radio galaxies are active galactic nuclei, and many expel one or more jets of matter directly from the nucleus that can be observed in the visible spectrum and extend for millions of light-years. See also Seyfert galaxy.
[rey-dee-oh-jen-ik] /ˌreɪ di oʊˈdʒɛn ɪk/ adjective 1. Physics. produced by radioactive decay: radiogenic lead; radiogenic heat. 2. having qualities or characteristics that broadcast well; suitable for presentation on the radio. /ˌreɪdɪəʊˈdʒɛnɪk/ adjective 1. produced or caused by radioactive decay: a radiogenic element, radiogenic heat radiogenic (rā’dē-ō-jěn’ĭk)
- Radiogold colloid
radiogold colloid ra·di·o·gold colloid (rā’dē-ō-gōld’) n. A colloidal dispersion of a radioactive isotope of gold that emits a negative beta particle and a gamma ray for each atom of gold present, used for irradiating closed serous cavities and for liver scans.
[rey-dee-oh-gram] /ˈreɪ di oʊˌgræm/ noun 1. a message transmitted by radiotelegraphy. [rey-dee-oh-gram] /ˈreɪ di oʊˌgræm/ noun, British. 1. a combination and record player. /ˈreɪdɪəʊˌɡræm/ noun 1. (Brit) a unit comprising a radio and record player 2. a message transmitted by radiotelegraphy 3. another name for radiograph radiogram ra·di·o·gram (rā’dē-ō-grām’) n. A radiograph.
/ˌreɪdɪəʊˌɡəʊnɪˈɒmɪtə/ noun 1. a device used to detect the direction of radio waves, consisting of a coil that is free to rotate within two fixed coils at right angles to each other