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Definition of uranium

uranium

/jʊˈreɪ.ni.əm/
u · ra · ni · um
Adjective:uranic
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uranium Lexical Profile

uranium Game Scores & Validity

• noun

1

A dense, silvery-white, weakly radioactive metallic chemical element of the actinide series (symbol U, atomic number 92), whose fissile isotope U-235 is widely used as a fuel in nuclear power reactors.

Example

"The power plant relies on enriched uranium to generate electricity for hundreds of thousands of homes."

• Rhymes for uranium

• Nearby Words

ural
ural mountains
urals
uranium
urayasu
urban
urbana

Word Origin & Etymology

Coined in Modern Latin in 1789 by German chemist Martin Heinrich Klaproth, who named the newly discovered element after the planet Uranus, which had been discovered just eight years earlier by William Herschel.

Cite this Entry

Wordmom. (2026). Definition of Uranium. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/uranium
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