dioxide definition, dioxide meaning | English dictionary

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dioxide

  

      n  
1    any oxide containing two oxygen atoms per molecule, both of which are bonded to an atom of another element  
2       another name for a       peroxide       4  


carbon dioxide  
      n   a colourless odourless incombustible gas present in the atmosphere and formed during respiration, the decomposition and combustion of organic compounds, and in the reaction of acids with carbonates: used in carbonated drinks, fire extinguishers, and as dry ice for refrigeration. Formula: CO2,   (Also called)    carbonic-acid gas  
carbon dioxide snow  
      n   solid carbon dioxide, used as a refrigerant  
chrome dioxide  
      n      another name for       chromium dioxide  
chromium dioxide  
      n   a chemical compound used as a magnetic coating on cassette tapes; chromium(IV) oxide. Formula: CrO2,   (Also called (not in technical usage))    chrome dioxide  
nitrogen dioxide  
      n   a red-brown poisonous irritating gas that, at ordinary temperatures, exists in equilibrium with dinitrogen tetroxide. It is an intermediate in the manufacture of nitric acid, a nitrating agent, and an oxidizer for rocket fuels. Formula: NO2  
sulphur dioxide  
      n   a colourless soluble pungent gas produced by burning sulphur. It is both an oxidizing and a reducing agent and is used in the manufacture of sulphuric acid, the preservation of a wide range of foodstuffs (E220), bleaching, and disinfecting. Formula: SO2,   (Systematic name)    sulphur(IV) oxide  
thorium dioxide  
      n   a heavy insoluble white powder used in incandescent mantles. Formula: ThO2,   (Also called)    thoria  
titanium dioxide  
      n   a white insoluble powder occurring naturally as rutile and used chiefly as a pigment of high covering power and durability. Formula: TiO2,   (Also called)    titanium oxide, titanic oxide, titania  
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