Uranium is a silvery-white metallic chemical element in the actinide series of the periodic table, with symbol U and atomic number 92. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium is weakly radioactive because all its isotopes are unstable (with half-lives of the 6 naturally known isotopes, uranium-233 ...Found on http://en.wikipedia.org/wiki/Uranium
Uranium is a toxic radioactive element, used in weapons of mass destruction such as dirty bombs or nuclear weapons.Found on http://www.encyclo.co.uk/local/20762
(U) (u-ra´ne-әm) a hard and heavy radioactive metallic element; atomic number, 92; atomic weight, 238.03; see Appencix 6. Naturally occurring uranium is composed of three isotopes of mass numbers 234, 235, and 238. Uranium 235 separated from U 238 undergoes fission with slow neutrons, giving...Found on http://www.encyclo.co.uk/local/21001
- a heavy toxic silvery-white radioactive metallic elementFound on http://www.webdictionary.co.uk/definition.php?query=uranium
• An element of the chromium group, found in certain rare minerals, as pitchblende, uranite, etc., and reduced as a heavy, hard, nickel-white metal which is quite permanent. Its yellow oxide is used to impart to glass a delicate greenish-yellow tint which is accompanied by a strong fluorescence, and its black oxide is used as a pigment in p......Found on http://thinkexist.com/dictionary/meaning/uranium/
<element>A radioactive metallic element whose isotope, uranium-235, is a nuclear fission fuel. Plutonium, another fission fuel, can be produced from the more plentiful isotope uranium-238. ... (09 Oct 1997) ... Found on http://www.encyclo.co.uk/local/20973
a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weaponsFound on https://www.encyclo.co.uk/local/20974
(U) A billet of highly enriched uranium recovered from scrap processed at the Y-12 Facility in Oak Ridge, TN. Credit: US Dept of Energy A heavy, silvery-white, metallic element, radioactive, easily oxidized, and having 14 known isotopes of which 238Found on http://www.daviddarling.info/encyclopedia/U/uranium.html
A mildly radioactive element with two isotopes which are fissile (U-235 and U-233) and two which are fertile (U-238 and U-234). Uranium is the basic fuel of nuclear energy.Found on http://www.translationdirectory.com/glossaries/glossary029.htm
Type: Term Pronunciation: yū-rā′nē-ŭm Definitions: 1. A radioactive metallic element, atomic no. 92, atomic wt. 238.0289, occurring mainly in pitchblende and notable for its two isotopes: 238U and 235U (99.2745% and 0.720%, respectively, the rest being made up by 234U), 235U being the first substance ever shown ...Found on http://www.medilexicon.com/medicaldictionary.php?t=95825
235 Uranium 235 is a radioactive element; over time, it gradually changes into the element lead. It can be used to date very old rock layers. Found on http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
A heavy, naturally radioactive, metallic element (atomic number 92). Its two principally occurring isotopes are 235U and 238U. The isotope 235U is indispensable to the nuclear industry because it is the only isotope existing in nature to any appreciable extent that is fissionable by thermal neutrons. The isotope 238U is also important because it ab...Found on http://www.libertystaruranium.com/miningexplained/mining-geology-glossary/
A heavy, silvery-white, naturally radioactive, metallic element (atomic number 92). Its two principally occurring isotopes are uranium-235 and uranium-238. Uranium-235 is indispensable to the nuclear industry because it is the only isotope existing in nature to any appreciable extent that is fission...Found on http://www.daviddarling.info/encyclopedia/U/AE_uranium.html
A mildly radioactive element with two isotopes which are fissile (U-235 and U-233) and two which are fertile (U-238 and U-234). Uranium is the basic raw material of nuclear energy.
Found on http://www.encyclo.co.uk/local/20841
A mildly radioactive element with two isotopes which are fissile (U-235 and U-233) and two which are fertile (U-238 and U-234). Uranium is the basic raw material of nuclear energy.Found on http://www.encyclo.co.uk/local/21076
A radioactive element, found in ores, of which atoms can be split to create energy.Found on http://www.neo.ne.gov/statshtml/glossaryu.htm
A radioactive, silvery-white, metallic element.Found on http://www.adrianaresources.com/s/Glossary.asp
Although uranium is the longest known member of the actinide group of metals, it attracted scant attention until the discovery of uranium fission in 1939. It is now of vital importance as a nuclear fuel. Uranium occurs naturally as two main isotopes, 238
U (99.3%) and 235
U (0.7%), along with a trace of a third isotope, 233...
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Hard, lustrous, silver-white, malleable and ductile, radioactive, metallic element of the actinide series, atomic number 92, relative atomic mass 238.029. It is the most abundant radioactive element in the Earth's crust, its decay giving rise to essentially all radioactive elements in nature; its final decay product is the stable elemen...
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Naturally occurring radioactive metal. Exposure to uranium is a very rare cause of lung cancer.
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radioactive chemical element of the actinoid series of the periodic table, atomic number 92. It is an important nuclear fuel.[26 related articles]
Found on http://www.britannica.com/eb/a-z/u/16
Radioactive metallic element (system U) of proton number 92 and relatives atomic mass 238.029.
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uranium (yOOrā'nēum) , radioactive metallic chemical element; symbol U; at. no. 92; at. wt. 238.0289; m.p. 1,132°C; b.p. 3,818°C; sp. gr. 19.1 at 25°C; valence +3, +4, +5, or +6.Sections in this article:IntroductionPropertiesIsotopes and Radioactive DecayNatural Occurrenc...
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Uranium is a heavy, metallic, naturally Radioactive Element of Atomic Number 92. It has two principle isotope of uranium-235 and uranium-238 ( and very small quantities of Uranium-234). The proportions of natural uranium by weight are about 0.01% Uranium-234, 0.072% Uranium-235, and 99.27% U-238. Uranium-235 is used in the the nuclear industry bec....
Found on http://www.ionactive.co.uk/glossary_atoz.html?s=az&t=u
Uranium is a heavy, metallic, naturally Radioactive Element of Atomic Number 92. It has two principle isotope of uranium-235 and uranium-238 ( and very small quantities of Uranium-234). The proportions of natural uranium by weight are about 0.01% Uranium-234, 0.072% Uranium-235, and 99.27% U-238. Uranium-235 is used in the the nuclear industry beca...
Found on http://www.ionactive.co.uk/glossary.html
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