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isotope [isotopes] (atoms of the same element having a different number of neutrons) noun [UK: ˈaɪ.sə.təʊp] [US: ˈaɪ.sətoʊp] | изотопnoun |
radioisotope [radioisotopes] (a radioactive isotope of an element) noun [UK: ˌreɪ.dɪəʊ.ˈaɪ.sə.təʊp] [US: ˌreɪ.dɪo.ʊ.ˈaɪ.sətoʊp] | радиоактивный изотопnoun радиоизотопnoun |