Look up: Disproportionation

1. 
   disproportionation
   disproportion; disproportionate; disproportionating. A reaction involving a substance that produces two different forms of the substance, one more oxidized and the other more reduced than the original.
   Found on http://antoine.frostburg.edu/chem/senese
   
   
2. 
   disproportionation
   A chemical reaction in which a single reactant breaks up to produce two different products
   Found on http://www.greener-industry.org
   
   
3. 
   disproportionation
   <chemistry> The splitting of a chemical compound into two new compounds, one more oxidized and one more reduced than the original compound. ... (11 Jan 1998) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
4. 
   Disproportionation
   `Disproportionation` or `dismutation` is used to describe two particular types of chemical reaction: * A chemical reaction of the type: 2A -> A' + A` where A, A' and A` are different chemical species. While the most common type is a redox reaction, other types are possible. For example: 2H2O -> H3O+ + OH- is a disproportionation but is not a redox reaction. * A chemical reaction in which an element is simultaneously reduced and oxidized to form...
   Found on http://en.wikipedia.org/wiki/Disproporti
   
   
5. 
   disproportionation
   (from the article `halogen element`) ...the nonmetal is both oxidized and reduced (i.e., its oxidation number is increased and decreased, respectively). A reaction in which the same ... [2 related articles]
   Found on http://www.britannica.com/eb/a-z/d/56