hyperpyrexia
"hyperpyrexia" is a 12-letter English headword indexed on PlainSpell.
The verdict
“hyperpyrexia” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 12
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - An excessive and unusual elevation of set body temperature greater than or equal to 41°C (105.8°F), or extremely high fever.
Corpus desk
Index EN-hyperpyrexia · hyperpyrexia · English
hyperpyrexia · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 12 letters
- VOW-6 6 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "H" 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 | hyperpyrexia |
| Language | English |
| Part of speech | Noun |
| Letters | 12 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “hyperpyrexia” in English
Rare enough to double-check
hyperpyrexia is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "An excessive and unusual elevation of set body temperature greater than or equal to 41°C (105.8°F), or extremely high fever.".
Our edit-distance generator produced no likely misspellings for hyperpyrexia, a straightforward case of a spelling with little room for common typos. This headword has no recorded confusable partner, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Etymologically, the entry records: From hyper- + pyrexia. The correct English form is hyperpyrexia, spelled H-Y-P-E-R-P-Y-R-E-X-I-A.
Definition
- 1An excessive and unusual elevation of set body temperature greater than or equal to 41°C (105.8°F), or extremely high fever.
Etymology
From hyper- + pyrexia.
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.