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Added 10 October 2026

uranium

/ˌjuː.ˈɹeɪ.ni.əm/ noun

In Latin: uranium Wiktionary

noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about uranium at Wordnik → Where our words come from →

The element with atomic number 92 and symbol U. A radioactive silvery-grey metal in the actinide series.
An atom of this element.

Origin

After Uranus (the planet), + -ium.

From Wiktionary, via Kaikki.org (CC BY-SA)

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