Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The divalent ion UO22+.

from The Century Dictionary.

  • noun Uranium dioxid, UO2, when it occurs as a dyad radical in combination: as, for example, potassium and uranyl sulphate, K2.UO2.(SO4)2.-(H2O)2, the salt with which Becquerel's first experiment in regard to radioactivity was made.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Chem.) The radical UO2, conveniently regarded as a residue of many uranium compounds.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun chemistry The divalent radical UO22+, conveniently regarded as a residue of many uranium compounds.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the bivalent radical UO2 which forms salts with acids

Etymologies

Sorry, no etymologies found.

Examples

  • When UF6 comes into contact with water, such as water vapor in the air, the UF6 and water react, forming corrosive hydrogen fluoride (HF) and a uranium-fluoride compound called uranyl fluoride (UO2F2).

    Uranium

  • When UF6 comes into contact with water, such as water vapor in the air, the UF6 and water react, forming corrosive HF and a uranium-fluoride compound called uranyl fluoride (UO2F2).

    Uranium hexafluoride

  • This makes the uranyl ion less kidney-toxic and promotes excretion of the nontoxic uranium-carbonate complex.

    Dr. James P. Blumenthal: Healthy Tips For Protecting Your Body From Radiation And Nuclear Fallout

  • This makes the uranyl ion less kidney-toxic and promotes excretion of the nontoxic uranium-carbonate complex.

    Dr. James P. Blumenthal: Healthy Tips For Protecting Your Body From Radiation And Nuclear Fallout

  • “DNA damage induced by reactions of uranyl acetate with ascorbate.”

    Yellow Dirt

  • The UF6 is first vapourised in autoclaves with steam, then the uranyl fluoride is reacted with hydrogen at 700ºC to yield an HF byproduct for sale and U3O8 powder which is packed into 10-tonne containers for storage.

    Uranium enrichment

  • The approved nuclear fuel conversion procedure involved the dissolution of uranium oxide (U3O8) powder in a dissolution tank, then its transfer as pure uranyl nitrate solution to a buffer column for mixing, followed by transfer to a precipitation tank.

    Tokaimura criticality accident, Japan

  • After initial refining, which may involve the production of uranyl nitrate, uranium trioxide is reduced in a kiln by hydrogen to uranium dioxide.

    Uranium enrichment

  • UF6 is hygroscopic (i.e., moisture-retaining) and, in contact with water (H2O), will decompose immediately to uranyl fluoride (UO2F2).

    Uranium hexafluoride

  • However, UF6 combines with water to form the soluble reaction products uranyl fluoride (UO2F2) and hydrogen fluoride (HF).

    Uranium hexafluoride

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