Chem.
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 .
[ 1940-45 ]
Chem.
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 .
[ 1940-45 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012