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untrue
untruth
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ununquadium

un·un·qua·di·um [ ùn un kwáydee əm ]


noun 
Definition:
 
artificially produced chemical element: a highly unstable radioactive chemical element, produced artificially by nuclear fusion, with an atomic number of 114.
Symbol  Uuq


[Late 20th century. < Latin unus "one" (repeated) + shortening of quadri- "four" (see quadri-), representing 114, its atomic number]
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