dioxide
/daɪˈɑksaɪd/noun
dioxide is spelled D-I-O-X-I-D-E: 7 letters and 3 syllables. It appears 6.5 times per million words in written English, the 9,463rd most frequent word form (wordfreq, 2021 data). As a noun, dioxide means “Any oxide containing two oxygen atoms in each molecule” (English Wiktionary, September 2026). The plural of dioxide is dioxides.
How many letters and syllables are in dioxide?
| Letters | 7: D-I-O-X-I-D-E |
|---|---|
| Syllables | 3 (from its American pronunciation) |
| In writing | 6.5 times per million words; the 9,463rd most frequent word form |
| Wrong spellings searched | none measured in search |
| Rhymes with |
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); rhymes and same-letter words are computed by PlainSpell from its own word list.
How common is dioxide?
Dioxide appears 6.5 times per million words in written English, the 9,463rd 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 dioxide?
- UK /daɪˈɒksaɪd/
- US /daɪˈɑksaɪd/
- Canada /daɪˈɒksaɪd/
Dioxide 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-dioxide.wav, Wikimedia Commons (author and licence on each file's page).
What rhymes with dioxide?
2 words on PlainSpell end in the same sounds as dioxide from its last stressed vowel (/ɑksaɪd/):
Computed by PlainSpell from the pronunciations in the English Wiktionary (dump of September 2, 2026): a rhyme shares every sound from the last stressed vowel to the end; ordered by written frequency (wordfreq 3.1).
Forms of dioxide
- dioxides plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does dioxide mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Any oxide containing two oxygen atoms in each molecule.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Dioxide in Spanish, French, German and Portuguese
In the sense any oxide containing two oxygen atoms in each molecule:
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.