| 释义 |
dismutation Chem. and Biochem.|dɪsmjuːˈteɪʃən|
[dis-.]
Disproportionation: usually, disproportionation involving the simultaneous oxidation and reduction of a compound in a biological context.
1926Chem. Abstr. XX. 929 The great biological significance of dismutation instead of simple oxidation is emphasised. 1938Nature 4 June 992/1 The principle of the hydrogen shift (dismutation), which governs the mechanism of alcoholic fermentation, has been carefully studied. 1954New Biol. XVI. 65 The semiquinones probably disappear by dismutation into quinone and quinol. 1970R. W. McGilvery Biochem. xiv. 270 Reactions such as this in which the oxidation of half of the substrate is counterbalanced by reduction of the other half are called dismutations.
Hence (as a back-formation) diˈsmute v. intr., to undergo dismutation.
1947Science News V. 91 In neutral or slightly acid soils, tervalent manganese..dismutes forming manganese dioxide and bivalent manganese. 1957G. E. Hutchinson Treat. Limnol. I. xv. 802 This material dismutes, the reaction being equivalent to Mn2O3→MnO2 + MnO. |