uranium-238

noun

A radioactive isotope of uranium, 23892U, having a half-life of 4.5 billion years; it accounts for about 99.3% of natural uranium.

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Meanings

nounuranium-238 (uncountable)
  1. uncountablenatural sciencesA radioactive isotope of uranium, 23892U, having a half-life of 4.5 billion years; it accounts for about 99.3% of natural uranium.
Cite this entry
APA

uranium-238. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/uranium-238

MLA

“uranium-238.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/uranium-238. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “uranium-238,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/uranium-238.

Source: uranium-238 on Wiktionary, CC BY-SA 4.0.