Definition of “radium” - English Dictionary

british dictionary

“radium” in British English

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radiumnoun [ U ]

uk /ˈreɪ.di.əm/ us /ˈreɪ.di.əm/ symbol Ra

Examples

  • His medicine, Radithor, had a very dangerous chemical called radium in it.
  • She discovered radium, but she often forgot to eat.

(Definition of “radium” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“radium” in American English

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radiumnoun [ U ]

us /ˈreɪ·di·əm/

a chemical element that is radioactive (= producing energy from the breaking up of atoms)

(Definition of “radium” from the Cambridge Academic Content Dictionary © Cambridge University Press)