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unununium

American  
[uh-nuh-nuhn-ee-uhm] / ə nəˈnʌn i əm /

noun

Chemistry, Physics.
  1. former name of roentgenium. Uuu


Etymology

Origin of unununium

From Latin ūn(us) “one” + Latin ūn(us) + Latin ūn(us) + -ium; one ( def. ), -ium ( def. )