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radioactinium. In DICTIOUS you will not only get to know all the dictionary meanings for the word
radioactinium, but we will also tell you about its etymology, its characteristics and you will know how to say
radioactinium in singular and plural. Everything you need to know about the word
radioactinium you have here. The definition of the word
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English
Etymology
From radio- + actinium.
Noun
radioactinium (uncountable)
- (physics) The radioactive isotope of actinium, 22789Ac, having a half-life of 21.7 years
Synonyms