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UuoUnunoctium (element 118)
UUOUnilateral Ureteral Obstruction
UUOUrban Underground Outfits (Long Beach, California)
UUOUnidentified Underwater Object
References in periodicals archive ?
The most recent additions to the periodic table were ununtrium (113), ununpentium (115), ununseptium (117) and ununoctium (118).
Consider the working names of the new elements: ununtrium, ununpentium, ununseptium and ununoctium.
IUPAC has now initiated the process of formalA[degrees] ising names and symbols for ununA[degrees] trium, (Uut or element 113), ununpentium (Uup, 115), ununsepA[degrees] tium (Uus, 117), and ununoctium (Uuo, 118).