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radionuclide
radionuclide n.
Brit. 
/ˌreɪdɪə(ʊ)ˈnjuːklʌɪd/
, /ˌreɪdɪə(ʊ)ˈnjuːklʌɪd/U.S. /ˌreɪdioʊˈn(j)uˌklaɪd/
a radioactive nuclide; cf. radioisotope n./ˌreɪdioʊˈn(j)uˌklaɪd/ΘΚΠ
the world > matter > physics > atomic nucleus > radioactive isotope > radioactive nuclide > [noun]
nuclide1947
radionuclide1947
1947 T. P. Kohman in Amer. Jrnl. Physics 15 356/2 Radionuclide should replace radioelement and radioisotope in most applications.
1964 Oceanogr. & Marine Biol. 2 259 [Among fish] herbivores and omnivores tend to concentrate the same radionuclides which are present in plankton.
1977 I. M. Campbell Energy & Atmosphere vii. 187 The radionuclide 14C is produced naturally in the atmosphere by cosmic radiation but the level was almost doubled by the atmospheric nuclear-weapon testing of the 1960's.
1996 Focus Apr. 34/1 In Ukraine, radionuclides from the nuclear fuel still inside the sarcophagus are seeping into the water table.
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