ATOMIC NUMBER 111

 I. (noun) 

Sense 1

Meaning:

A radioactive transuranic element

Synonyms:

atomic number 111; element 111; Rg; roentgenium

Classified under:

Nouns denoting substances

Hypernyms ("atomic number 111" is a kind of...):

chemical element; element (any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter)

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