trioxide
/trʌɪˈɒksʌɪd/
"trioxide" is a 8-letter English headword indexed on PlainSpell.
The verdict
“trioxide” is uncommon English (frequency #91,086 among 3,151 “T” headwords), classed as a noun. The kind of spelling people second-guess.
- #91,086
- frequency rank, English
- 3,151
- “T” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Any oxide containing three oxygen atoms in each molecule.
Corpus desk
Index EN-trioxide · trioxide · English
trioxide · rank #91,086 · 0 variants · 0 confusables
- FREQ-RARE #91,086
- LEN-LONG 8 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,151
- PHOTO-FINISH trilobite
Nearest frequency peer: trilobite (-1 rank slots)
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.
Long-tail ranks near “trioxide”
Sparse band: bars invert rank so rarer forms read shorter
- toymaker
toymaker
8,922 corpus weight
- traineeship
traineeship
8,919 corpus weight
- trilobite
trilobite
8,916 corpus weight
- trioxide
trioxide
8,915 corpus weight
- tripos
tripos
8,914 corpus weight
- tropospheric
tropospheric
8,911 corpus weight
What this shows Long-tail view: where “trioxide” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | trioxide |
| Language | English |
| Part of speech | Noun |
| IPA | /trʌɪˈɒksʌɪd/ |
| Letters | 8 |
| Frequency rank | #91,086 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “trioxide” in English
Rare enough to double-check
trioxide is uncommon English at frequency #91,086 among 3,151 “T” headwords, classed as anoun, transcribed /trʌɪˈɒksʌɪd/. Rarity is why readers land here mid-draft. 2 senses are on record.
We couldn't generate a plausible misspelling set for trioxide, suggesting the orthography follows predictable English patterns. This headword has no recorded confusable partner, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: From tri- + oxide. The correct English form is trioxide, spelled T-R-I-O-X-I-D-E.
Definition
- 1Any oxide containing three oxygen atoms in each molecule.
- 2Any organic compound of general formula R-OOO-R', derived from trioxidane.
Recorded use
Wiktionary exampleThese source excerpts show how trioxide appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Zeona has a thin atmosphere of sulfur dioxide and trioxide, created by volcanic outgassing. There are traces of water vapor in the atmosphere, but over the last five centuries of observation particle counts have decreased 4%.
Etymology
From tri- + oxide.
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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Similar English words by spelling shape
Same letter count and similar misspelling depth for "trioxide", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 8 letters (nearest by frequency rank).