anion
/ˈænˌaɪ.ən/noun
anion is spelled A-N-I-O-N: 5 letters and 3 syllables. It appears about once in every 2 million words in written English, the 41,660th most frequent word form (wordfreq, 2021 data). As a noun, anion means “A negatively charged ion” (English Wiktionary, September 2026). The plural of anion is anions.
How many letters and syllables are in anion?
| Letters | 5: A-N-I-O-N |
|---|---|
| Syllables | 3 (from its American pronunciation) |
| In writing | about once in every 2 million words; the 41,660th 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 anion?
Anion appears about once in every 2 million words in written English, the 41,660th 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 anion?
- US /ˈænˌaɪ.ən/
- US /ˈænˌaɪ.ɑn/
- UK /ˈænˌaɪ.ɒn/
Anion has 3 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-anion.wav, Wikimedia Commons (author and licence on each file's page).
Forms of anion
- anions plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does anion mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A negatively charged ion.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Anion in Spanish, French, German and Portuguese
In the sense negatively charged ion:
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 anion come from?
Learned borrowing from Ancient Greek ἀνιόν (anión, “(thing) going up”), neuter present participle of ἄνειμι (áneimi, “go up”), from ἀνά (aná, “up”) + εἶμι (eîmi, “go”). Coined by English polymath William Whewell in 1834 for Michael Faraday, who introduced it later that year. By surface analysis, an- (“up, away, forward”) + ion.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).