uranium

[ yoo-rey-nee-uhm ]

/ yʊˈreɪ ni əm /

noun Chemistry.

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. Symbol: U; atomic weight: 238.03; atomic number: 92; specific gravity: 19.07.

Origin of uranium

From New Latin, dating back to 1790–1800; see origin at Uranus, -ium

Words nearby uranium

uraninite, uraniscus, uranism, uranite, uranite group, uranium, uranium 235, uranium 238, uranium 239, uranium dating, uranium dioxide

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for uranium

And that conglomerate also owns nearly 70 percent of the Rossing uranium mine in Namibia.
McCain Helps a Business Partner of Iran|Ben Jacobs|November 13, 2014|DAILY BEAST
Since then, all dividend payments have been frozen and Iran receives “no uranium or revenue from the mine.”
McCain Helps a Business Partner of Iran|Ben Jacobs|November 13, 2014|DAILY BEAST
A drawing of what was deemed a “deer pig” was also sent through the uranium decay ringer.
The Oldest Cave Art May Not Be in Europe|Justin Jones|October 9, 2014|DAILY BEAST
A six-month quasi-limit on uranium enrichment does not mean the government has changed.
How America’s Nuclear Deal Sold Out Iran’s Liberals|David Keyes & Ahmad Batebi|December 3, 2013|DAILY BEAST

It completely stops enrichment of uranium to 20 percent—the level needed to make a bomb.
Obama and the Munich Katrinas|Michael Tomasky|November 26, 2013|DAILY BEAST
Mme. Curie examined at the same time the salts of uranium and a number of uranium ores.
An Introduction to the History of Science|Walter Libby
Los Alamos scientists devised two designs for an atomic bomb--one using the uranium and another using the plutonium.
Trinity [Atomic test] Site|White Sands Missile Range Public Affairs Office
The number of free positive electrons in the nucleus varies from one in hydrogen to 92 in uranium.
Creative Chemistry|Edwin E. Slosson
Platinotypes may be toned to a red-brown by uranium nitrate, or to a bluer colour with chloride of gold.
The Barnet Book of Photography|Various
Autunite, a hydrous phosphate of uranium and calcium, crystallizing in the rhombic system in yellow plates.
The New Gresham Encyclopedia. Vol. 1 Part 3|Various

British Dictionary definitions for uranium

uranium

/ (jʊˈreɪnɪəm) /

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, 238 U: 451 × 10 9 years; valency: 2-6; relative density: 18.95 (approx.); melting pt: 1135°C; boiling pt: 4134°C

Word Origin for uranium

C18: from New Latin, from Uranus ²; from the fact that the element was discovered soon after the planet

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Cultural definitions for uranium

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.)

Medical definitions for uranium

uranium

[ yu-rā′nē-əm ]

n. Symbol U

An easily oxidized radioactive toxic metallic element having 16 known isotopes, of which U 238 is the most naturally abundant. Atomic number 92.

Scientific definitions for uranium

uranium

[ yu-rā′nē-əm ]

U

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.

单词	uranium
释义	uranium [ yoo-rey-nee-uhm ] / yʊˈreɪ ni əm / noun Chemistry. 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. Symbol: U; atomic weight: 238.03; atomic number: 92; specific gravity: 19.07. Origin of uranium From New Latin, dating back to 1790–1800; see origin at Uranus, -ium Words nearby uranium uraninite, uraniscus, uranism, uranite, uranite group, uranium, uranium 235, uranium 238, uranium 239, uranium dating, uranium dioxide Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for uranium And that conglomerate also owns nearly 70 percent of the Rossing uranium mine in Namibia. McCain Helps a Business Partner of Iran\|Ben Jacobs\|November 13, 2014\|DAILY BEAST Since then, all dividend payments have been frozen and Iran receives “no uranium or revenue from the mine.” McCain Helps a Business Partner of Iran\|Ben Jacobs\|November 13, 2014\|DAILY BEAST A drawing of what was deemed a “deer pig” was also sent through the uranium decay ringer. The Oldest Cave Art May Not Be in Europe\|Justin Jones\|October 9, 2014\|DAILY BEAST A six-month quasi-limit on uranium enrichment does not mean the government has changed. How America’s Nuclear Deal Sold Out Iran’s Liberals\|David Keyes & Ahmad Batebi\|December 3, 2013\|DAILY BEAST It completely stops enrichment of uranium to 20 percent—the level needed to make a bomb. Obama and the Munich Katrinas\|Michael Tomasky\|November 26, 2013\|DAILY BEAST Mme. Curie examined at the same time the salts of uranium and a number of uranium ores. An Introduction to the History of Science\|Walter Libby Los Alamos scientists devised two designs for an atomic bomb--one using the uranium and another using the plutonium. Trinity [Atomic test] Site\|White Sands Missile Range Public Affairs Office The number of free positive electrons in the nucleus varies from one in hydrogen to 92 in uranium. Creative Chemistry\|Edwin E. Slosson Platinotypes may be toned to a red-brown by uranium nitrate, or to a bluer colour with chloride of gold. The Barnet Book of Photography\|Various Autunite, a hydrous phosphate of uranium and calcium, crystallizing in the rhombic system in yellow plates. The New Gresham Encyclopedia. Vol. 1 Part 3\|Various British Dictionary definitions for uranium uranium / (jʊˈreɪnɪəm) / 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, 238 U: 451 × 10 9 years; valency: 2-6; relative density: 18.95 (approx.); melting pt: 1135°C; boiling pt: 4134°C Word Origin for uranium C18: from New Latin, from Uranus ²; from the fact that the element was discovered soon after the planet Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cultural definitions for uranium 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.) The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Medical definitions for uranium uranium [ yu-rā′nē-əm ] n. Symbol U An easily oxidized radioactive toxic metallic element having 16 known isotopes, of which U 238 is the most naturally abundant. Atomic number 92. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for uranium uranium [ yu-rā′nē-əm ] U 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. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
随便看	rgs rgt rh rh0(d) immune globulin rha rhabditis rhabdo- rhabdocoele rhabdoid rhabdom rhabdomancy rhabdomyoblast rhabdomyolysis rhabdomyoma rhabdomyosarcoma rhabdoviridae rhabdovirus rhachilla rhachis rhadamanthus rhadamanthys rhaetia rhaetian rhaetian alps rhaetic