Definition of disproportionation in English:
 disproportionation
nounˌdɪsprəpɔːʃəˈneɪʃ(ə)nˌdisprəˌpôrSHəˈnāSH(ə)n
mass nounChemistry A reaction in which a substance is simultaneously oxidized and reduced, giving two different products.
 Example sentencesExamples
-  Reactions in which atoms of the same element are both oxidized and reduced are disproportionation reactions.
 -  It has been shown above that sulphur disproportionation was probably active in the basin, allowing for a higher fractionation between sulphates and sulphides.
 -  Three categories that encompass all these different redox reactions are atom transfer redox reactions, electron transfer reactions, and disproportionation reactions.
 -  This complex can lead to the formation of uncolored and colored dimers and/or revert back to the monomers in their ground state by disproportionation of the semiquinone radical.
 -  The net differences in the entropy term of the disproportionation equilibria are small, which may reflect cancellations of components rather than lack of interactions.
 
  Definition of disproportionation in US English:
 disproportionation
nounˌdisprəˌpôrSHəˈnāSH(ə)n
Chemistry A reaction in which a substance is simultaneously oxidized and reduced, giving two different products.
 Example sentencesExamples
-  Three categories that encompass all these different redox reactions are atom transfer redox reactions, electron transfer reactions, and disproportionation reactions.
 -  This complex can lead to the formation of uncolored and colored dimers and/or revert back to the monomers in their ground state by disproportionation of the semiquinone radical.
 -  The net differences in the entropy term of the disproportionation equilibria are small, which may reflect cancellations of components rather than lack of interactions.
 -  It has been shown above that sulphur disproportionation was probably active in the basin, allowing for a higher fractionation between sulphates and sulphides.
 -  Reactions in which atoms of the same element are both oxidized and reduced are disproportionation reactions.