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unnilennium

[ yoo-ni-len-ee-uhm ]

noun

, Chemistry, Physics.
  1. the systematic element name for element 109 before being named meitnerium. : Une


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Word History and Origins

Origin of unnilennium1

First recorded in 1980–85; from Latin ūn(us) “one” + nil ( def ) “zero” + Greek enn(ė́a) “nine” + -ium ( def )

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