U-238
or U 238
Chemistry.
Definition for u-238 (2 of 2)
uranium 238
noun Chemistry.
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.
Also called
U-238,
U 238.
Origin of uranium 238
First recorded in 1940–45
Example sentences from the Web for u-238
If you can use your demons to separate U-235 from U-238, you can use them for separating gold from sea water.
A Feast of Demons |William MorrisonI could use it for separating U-235 from U-238 just as easily.
A Feast of Demons |William Morrison