n. The divalent radical UO22+, conveniently regarded as a residue of many uranium compounds.
the GNU version of the Collaborative International Dictionary of English
n. The radical UO2, conveniently regarded as a residue of many uranium compounds.
The Century Dictionary and Cyclopedia
n. 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.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the bivalent radical UO2 which forms salts with acids
Word Usage
"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)."