U-235

or U 235


Chemistry.

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.

Origin of uranium 235

First recorded in 1935–40
Also called U-235, U 235, actinouranium.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples 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