acetaldehyde
/ˌæs.ɪˈtæl.dəˌhaɪd/noun
acetaldehyde is spelled A-C-E-T-A-L-D-E-H-Y-D-E: 12 letters and 5 syllables. It appears about once in every 7 million words in written English, the 76,798th most frequent word form (wordfreq, 2021 data). As a noun, acetaldehyde means “A colourless organic compound, CH₃CHO, occurring widely in nature and being produced on a large scale in industry” (English Wiktionary, September 2026). The plural of acetaldehyde is acetaldehydes.
How many letters and syllables are in acetaldehyde?
| Letters | 12: A-C-E-T-A-L-D-E-H-Y-D-E |
|---|---|
| Syllables | 5 (from its pronunciation) |
| In writing | about once in every 7 million words; the 76,798th 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 acetaldehyde?
Acetaldehyde appears about once in every 7 million words in written English, the 76,798th 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).
How do you pronounce acetaldehyde?
- US /ˌæs.ɪˈtæl.dəˌhaɪd/
Acetaldehyde has 5 syllables (counted from the pronunciation).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Eleanorrrrrrrrrr-acetaldehyde.wav, Wikimedia Commons (author and licence on each file's page).
Forms of acetaldehyde
- acetaldehydes plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does acetaldehyde mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A colourless organic compound, CH₃CHO, occurring widely in nature and being produced on a large scale in industry.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Acetaldehyde in Spanish, French, German and Portuguese
In the sense the organic compound CH3CHO:
| Language | Words |
|---|---|
| French | acétaldéhyde, éthanal |
| German | Acetaldehyd |
| Portuguese | acetaldeído, etanal |
| Spanish | acetaldehído |
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.