#oxidation__oxidization__oxidisation  the process of oxidizing; the addition of oxygen to a compound with a loss of electrons; always occurs accompanied by reduction
  supertype:  chemical_reaction__reaction  (chemistry) a process in which one or more substances are changed into others; "there was a chemical reaction of the lime with the ground water"
  subtype:  calcination  the conversion of metals into their oxides as a result of heating to a high temperature
  subtype:  combustion__burning  a process in which a substance reacts with oxygen to give heat and light
     subtype:  flame__fire__flaming  the process of combustion of inflammable materials producing heat and light and (often) smoke; "fire was one of our ancestors' first discoveries"
        subtype:  blazing__blaze  a strong flame that burns brightly; "the blaze spread rapidly"
        subtype:  flare.flame  a sudden burst of flame
     subtype:  internal_combustion  the combustion of fuel inside a cylinder (as in an internal-combustion engine)
  subtype:  nitrification  the oxidation of ammonium compounds into nitrates by soil bacteria
  subtype:  rusting__rust  the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water

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