poloniumnoun [ U ]uk /pəˈləʊ.ni.əm/ us /pəˈloʊ.ni.əm/ symbol Po
- Did you know that Marie Curie, who discovered polonium, died after working for many years with radioactive substances?
(Definition of “polonium” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
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the people living in one particular area or people who are considered as a unit because of their common interests, social group, or nationality