dioxygen
/daɪˈɒksɪdʒən/
"dioxygen" is a 8-letter English headword indexed on PlainSpell.
The verdict
“dioxygen” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 8
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Diatomic oxygen: the normal allotrope of oxygen, having two atoms per molecule.
Corpus desk
Index EN-dioxygen · dioxygen · English
dioxygen · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 8 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "D" thin
- PHOTO-UNK Peer pending
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
| Property | Value |
|---|---|
| Headword | dioxygen |
| Language | English |
| Part of speech | Noun |
| IPA | /daɪˈɒksɪdʒən/ |
| Letters | 8 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “dioxygen” in English
Rare enough to double-check
dioxygen is uncommon English outside the top frequency list, classed as anoun, transcribed /daɪˈɒksɪdʒən/. Rarity is why readers land here mid-draft. 2 senses are on record.
dioxygen has no tracked misspelling variants, suggesting the orthography follows predictable English patterns. This entry stands alone in our confusable dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.
Etymologically, the entry records: From di- + oxygen. The correct English form is dioxygen, spelled D-I-O-X-Y-G-E-N.
Definition
- 1Diatomic oxygen: the normal allotrope of oxygen, having two atoms per molecule.
- 2Two atoms of oxygen in a molecule.
Recorded use
Wiktionary exampleThese source excerpts show how dioxygen appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Meronym: oxygen (strict sense)
Etymology
From di- + oxygen.
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.