Word.ws English Dictionary

uranium-235

uranium-235 noun: a fissile isotope of uranium, used for energy generation and in atomic weapons, containing 143 neutrons. It has a half-life of 7.038×10⁸ years; it decays into thorium-231 and ultimately lead.

uranium-235: a fissile isotope of uranium, used for energy generation and in atomic weapons, containing 143...
Image: Stefan-Xp, CC BY-SA 3.0, via Wikimedia Commons

Noun

uranium-235 (uncountable)

  1. A fissile isotope of uranium, used for energy generation and in atomic weapons, containing 143 neutrons. It has a half-life of 7.038×10⁸ years; it decays into thorium-231 and ultimately lead.
    • The Zaporizhzhia plant provided about a fifth of Ukraine’s electricity before Russia’s invasion, and has been forced to operate on backup generators a number of times. It has six Soviet-designed water-cooled and water-moderated reactors containing uranium-235.2022 November 21, Lorenzo Tondo, Peter Beaumont, “Ukraine to start evacuations in Kherson and Mykolaiv regions as winter sets in”, in The Guardian

Origin of uranium-235

From uranium + 235 (the atomic mass of the isotope).

Questions about uranium-235

What does uranium-235 mean?
Uranium-235 means a fissile isotope of uranium, used for energy generation and in atomic weapons, containing 143 neutrons. It has a half-life of 7.038×10⁸ years; it decays into thorium-231 and ultimately lead.
What part of speech is uranium-235?
Uranium-235 is a noun.

Words near uranium-235 in the dictionary

  1. uranium nitrides
  2. uranium series
  3. uranium trioxide
  4. uranium-233
  5. uranium-234
  6. uranium-235
  7. uranium-238
  8. uraniumaire
  9. uraniumaires
  10. uraniums
  11. uranmicrolite

Source and license

Adapted from Wiktionary: uranium-235 (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “uranium-235.” Word.ws, https://word.ws/uranium-235. Based on Wiktionary, CC BY-SA 4.0.