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RG
Pronunciation (US): | (GB): |
I. (noun)
Sense 1
Meaning:
A radioactive transuranic element
Synonyms:
atomic number 111; element 111; Rg; roentgenium
Classified under:
Hypernyms ("Rg" 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)