A reaction involving a single substance but producing two products; e.g., two molecules of acetaldehyde may react, producing an oxidation product (acetic acid) and a reduction product (ethyl alcohol).
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dis·mu·ta·tion .dis-myü-'tā-shən n a process of simultaneous oxidation and reduction used esp. of compounds taking part in biological processes
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dis·mu·ta·tion (dis″mu-taґshən) a reaction or reactions involving two identical molecules in which one gains what the other loses. For example, one may be oxidized and the other reduced, or one may be phosphorylated and the other dephosphorylated.Medical dictionary. 2011.