Poisson
/ˈpwɑ.sɒn/noun
Poisson is spelled P-O-I-S-S-O-N: 7 letters and 2 syllables. It appears about once in every 2 million words in written English, the 38,863rd most frequent word form (wordfreq, 2021 data). As a noun, Poisson means “The Poisson distribution” (English Wiktionary, September 2026). The plural of Poisson is Poissons.
How many letters and syllables are in Poisson?
| Letters | 7: P-O-I-S-S-O-N |
|---|---|
| Syllables | 2 (from its American pronunciation) |
| In writing | about once in every 2 million words; the 38,863rd most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is Poisson?
Poisson appears about once in every 2 million words in written English, the 38,863rd 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 Poisson?
- UK /ˈpwɑː.sɒn/
- UK /ˈpwɑː.sɒ̃/
- US /ˈpwɑ.sɒn/
Poisson has 2 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of Poisson
- Poissons plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does Poisson mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The Poisson distribution.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does Poisson come from?
Unadapted borrowing from French Poisson. The noun sense is named after French mathematician Siméon Denis Poisson (1781–1840).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).