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radiogene
radiogene n.
Brit. 
/ˈreɪdɪə(ʊ)dʒiːn/
, /ˈreɪdɪə(ʊ)dʒiːn/U.S. /ˈreɪdioʊˌdʒin/
rare (now disused) an apparatus for obtaining radium emanation (radon-222) in solution./ˈreɪdioʊˌdʒin/ΚΠ
1916 R. Knox X-ray Therapeutics & Radium Therapy II. 357 (caption) Radiogene (Siemens)... Insoluble sulphate of radium is placed in the small receptacle C in the vessel F... The vessel F is..filled with the water or other liquid which is..to be rendered radioactive.
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