u 239

U-239

Chemistry.
Also, U 239.
Dictionary.com Unabridged

uranium 239

noun Chemistry.
the uranium isotope with a mass number 239. It is artificially produced by the neutron bombardment of uranium 238.
Also called U-239, U 239.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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