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uranium
[ yoo-rey-nee-uhm ]
noun
- a white, lustrous, radioactive, metallic element, occurring in pitchblende, and having compounds that are used in photography and in coloring glass. The 235 isotope is used in atomic and hydrogen bombs and as a fuel in nuclear reactors. : U; : 238.03; : 92; : 19.07.
uranium
/ ʊˈɪɪə /
noun
- a radioactive silvery-white metallic element of the actinide series. It occurs in several minerals including pitchblende, carnotite, and autunite and is used chiefly as a source of nuclear energy by fission of the radioisotope uranium-235 . Symbol: U; atomic no: 92; atomic wt: 238.0289; half-life of most stable isotope, 238U: 451 × 10 9years; valency: 2-6; relative density: 18.95 (approx.); melting pt: 1135°C; boiling pt: 4134°C
uranium
/ -′ŧ-ə /
- A heavy, silvery-white, highly toxic, radioactive metallic element of the actinide series. It has 14 known isotopes, of which U 238 is the most naturally abundant, occurring in several minerals. Fissionable isotopes, especially U 235, are used in nuclear reactors and nuclear weapons. Atomic number 92; atomic weight 238.03; melting point 1,132°C; boiling point 3,818°C; specific gravity 18.95; valence 2, 3, 4, 5, 6.
- See Periodic Table
uranium
- A chemical element that is naturally radioactive . An isotope of uranium, uranium 235, is the main fuel for nuclear reactors and atomic bombs (see also atomic bomb ). Its symbol is U. ( See fission and chain reaction .)
51Թ History and Origins
51Թ History and Origins
Origin of uranium1
Compare Meanings
How does uranium compare to similar and commonly confused words? Explore the most common comparisons:
Example Sentences
"These dinners have become propaganda events for a White House that has really staked almost its entire politics on creating propaganda events, whether it be uranium from Africa or 'Mission Accomplished,'" Rich added.
From critical minerals and uranium to lumber and soybeans, he argues that this is the moment to change.
St Louis, meanwhile, was where uranium was refined and used to help create the atomic bomb as part of the Manhattan Project.
It has accelerated its enrichment of uranium - used to make reactor fuel but also potentially nuclear bombs - to close to weapons-grade.
Iran responded by increasingly breaching the terms of the deal, particularly those limiting the production of enriched uranium, which can be used to produce fuel for nuclear power plants but also to build nuclear weapons.
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