Standard Lemma guide

disproportionation

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

A form of redox reaction in which part of a reactant is oxidized and part of it is reduced simultaneously

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A reaction wherein a single reactant generates two chemical species which are different from each other and the initial reactant.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Possibly from disproportion + -ation, or from disproportionate + -ion.

Across languages

Translations

5 source translations are retained for this English entry.

  • French: dismutation — a form of redox reaction wherein the reactant is both oxidized and reduced
  • German: Disproportionierung — a form of redox reaction wherein the reactant is both oxidized and reduced
  • Italian: disproporzionamento — a form of redox reaction wherein the reactant is both oxidized and reduced
  • Korean: 불균등화 (bulgyundeunghwa) — a form of redox reaction wherein the reactant is both oxidized and reduced
  • Spanish: dismutación — a form of redox reaction wherein the reactant is both oxidized and reduced