Uranium meaning

yo͝o-rānē-əm
A dense silvery-white metallic element that is radioactive and toxic, is easily oxidized, and has numerous isotopes of which U-238 is the most abundant in nature. The element occurs in several minerals, including uraninite and carnotite, from which it is extracted and processed for use in research, nuclear fuels, and nuclear weapons. Atomic number 92; atomic weight 238.03; melting point 1,135°C; boiling point 4,131°C; specific gravity 19.1; valence 2, 3, 4, 5, 6.
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The uranium isotope with mass number 235 and half-life 7.04 × 108 years, fissionable with slow neutrons and capable in a critical mass of sustaining a chain reaction that can proceed explosively with appropriate mechanical arrangements.
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The most common isotope of uranium, having mass number 238 and half-life 4.47 × 109 years, nonfissionable but may be irradiated with neutrons to produce fissionable plutonium-239.
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A very hard, heavy, silver-colored, radioactive, metallic chemical element, one of the actinides, found only in combination, chiefly in pitchblende: symbol, U; at. no. 92: an isotope (uranium-235) undergoes neutron-induced fission and another, more plentiful, isotope (uranium-238) is used to produce plutonium.
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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.
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The element with atomic number 92 and symbol U.
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Origin of uranium

  • New Latin ūranium named by German chemist Martin Heinrich Klaproth, who discovered the element in 1789, after New Latin U̯ranus the planet Uranus, discovered in 1781 Uranus

    From American Heritage Dictionary of the English Language, 5th Edition

  • After Uranus (the planet).

    From Wiktionary