monoxide
/məˈnɒksʌɪd/
"monoxide" is a 8-letter English headword indexed on PlainSpell.
The verdict
“monoxide” has 11 generated spelling variants in the English index at frequency #20,435. The variants make it a useful spelling check.
- #20,435
- frequency rank, English
- 36,575
- “M” headwords
- 11
- tracked misspellings
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Any oxide containing a single oxygen atom in each molecule or formula unit.
| Property | Value |
|---|---|
| Headword | monoxide |
| Language | English |
| Part of speech | Noun |
| IPA | /məˈnɒksʌɪd/ |
| Letters | 8 |
| Frequency rank | #20,435 |
| Misspellings tracked | 11 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “monoxide” sits in English frequency
A misspelling magnet
The generator records 11 spelling variants around monoxide (IPA /məˈnɒksʌɪd/), anoun. Corpus frequency is #20,435 among 36,575 “M” headwords. Dominant gloss: "Any oxide containing a single oxygen atom in each molecule or formula unit.".
Our generated misspelling index lists 11 likely wrong-spelling variants for monoxide, with forms such as "mmonoxide", "mnooxide", and "monnoxide". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. This entry stands alone in our confusable dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: Formed as mon- + oxide; compare the earlier dioxide, pentoxide, and tetroxide. The correct English form is monoxide, spelled M-O-N-O-X-I-D-E.
Definition
- 1Any oxide containing a single oxygen atom in each molecule or formula unit.
Etymology
Formed as mon- + oxide; compare the earlier dioxide, pentoxide, and tetroxide.
This word in other languages
Common misspellings
Also misspelled as:
- mmonoxide
- mnooxide
- monnoxide
- monoixde
- monoxdie
- monoxidde
- monoxied
- monoxxide
- monxoide
- moonxide
- omnoxide
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of monoxide - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “monoxide”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is M-O-N-O-X-I-D-E - every other letter order is a misspelling in standard orthography.
- Say it as /məˈnɒksʌɪd/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Browse more English words and confusable pairs in the same reference. English words
Same frequency band
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.