disproportionation
noun
disproportionation is spelled D-I-S-P-R-O-P-O-R-T-I-O-N-A-T-I-O-N: 18 letters. It appears about once in every 28 million words in written English, the 159,707th most frequent word form (wordfreq, 2021 data). As a noun, disproportionation means “A form of redox reaction in which part of a reactant is oxidized and part of it is reduced simultaneously” (English Wiktionary, September 2026). The plural of disproportionation is disproportionations.
How many letters and syllables are in disproportionation?
| Letters | 18: D-I-S-P-R-O-P-O-R-T-I-O-N-A-T-I-O-N |
|---|---|
| In writing | about once in every 28 million words; the 159,707th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is disproportionation?
Disproportionation appears about once in every 28 million words in written English, the 159,707th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Forms of disproportionation
- disproportionations plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does disproportionation mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A form of redox reaction in which part of a reactant is oxidized and part of it is reduced simultaneously
- 2
A reaction wherein a single reactant generates two chemical species which are different from each other and the initial reactant.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Disproportionation in Spanish, French, German and Portuguese
In the sense a form of redox reaction wherein the reactant is both oxidized and reduced:
| Language | Words |
|---|---|
| French | dismutation |
| German | Disproportionierung |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does disproportionation come from?
Possibly from disproportion + -ation, or from disproportionate + -ion.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).