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unnilseptium

[ yoo-nil-sep-tee-uhm ]

noun

, Chemistry, Physics.
  1. the systematic element name for element 107 before being named bohrium. : Uns


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Word History and Origins

Origin of unnilseptium1

First recorded in 1975–80; from Latin ūn(us) “one” + nil ( def ) “zero” + sept(em) “seven” + -ium ( def )

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