disproportionation

noun dis·pro·por·tion·ation \-ˌpȯr-shə-ˈnā-shən\

Definition of DISPROPORTIONATION

: the transformation of a substance into two or more dissimilar substances usually by simultaneous oxidation and reduction

— dis·pro·por·tion·ate \-ˈpȯr-shə-ˌnāt\ intransitive verb

circa 1929

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