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.

Noun
uranium-235 (uncountable)
- 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
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.
