unnilennium

[ yoo-ni-len-ee-uhm ]

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

Origin of unnilennium

1
First recorded in 1980–85; from Latin ūn(us) “one” + nil “zero” + Greek enn(ė́a) “nine” + -ium

Words Nearby unnilennium

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023