or U 238
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Y U NO
the radioactive uranium isotope having a mass number 238, comprising 99.28 percent of natural uranium: used chiefly in nuclear reactors as a source of the fissionable isotope plutonium 239.
Origin of uranium 238
First recorded in 1940–45
Also called U-238, U 238.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for u-238
Historical Examples of u-238
I could use it for separating U-235 from U-238 just as easily.
If you can use your demons to separate U-235 from U-238, you can use them for separating gold from sea water.