U-235

or U 235

Chemistry.

uranium 235.

Definition for u-235 (2 of 2)

uranium 235

noun Chemistry.

the radioactive uranium isotope having a mass number of 235, comprising 0.715 percent of natural uranium. When bombarded with neutrons it undergoes fission with the release of energy.
Also called U-235, U 235, actinouranium.

Origin of uranium 235

First recorded in 1935–40

Example sentences from the Web for u-235

  • 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 Morrison

  • With a grim exultation pounding in his temples, Ward hurled a pellet of U-235 directly into their midst.

    Monsoons of Death |Gerald Vance

  • It was filled with neat rows of U-235 pellets, hardly an inch in diameter.

    Monsoons of Death |Gerald Vance

  • I could use it for separating U-235 from U-238 just as easily.

    A Feast of Demons |William Morrison