pion
/ˈpaɪɒn/noun
pion is spelled P-I-O-N: 4 letters and 2 syllables. It appears about once in every 9 million words in written English, the 89,388th most frequent word form (wordfreq, 2021 data). As a noun, pion means “Any of three semistable mesons, having positive, negative or neutral charge, composed of up and down quarks/antiquarks” (English Wiktionary, September 2026). The plural of pion is pions.
How many letters and syllables are in pion?
| Letters | 4: P-I-O-N |
|---|---|
| Syllables | 2 (from its American pronunciation) |
| In writing | about once in every 9 million words; the 89,388th 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 pion?
Pion appears about once in every 9 million words in written English, the 89,388th 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 pion?
- /ˈpaɪɒn/
Pion 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). Recordings: LL-Q1860_(eng)-Vealhurl-pion.wav, Wikimedia Commons (author and licence on each file's page).
Forms of pion
- pions plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does pion mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Any of three semistable mesons, having positive, negative or neutral charge, composed of up and down quarks/antiquarks.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Pion in Spanish, French, German and Portuguese
In the sense particle:
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 pion come from?
From pi + -on, as alteration of pi-meson.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).