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unnilennium
American
[yoo-ni-len-ee-uhm]
/ ˌju nɪˈlɛn i əm /
noun
Chemistry, Physics.
Etymology
Origin of unnilennium
First recorded in 1980–85; from Latin ūn(us) “one” + nil ( def. ) “zero” + Greek enn(ė́a) “nine” + -ium ( def. )
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
