exostosis
"exostosis" is a 9-letter English headword indexed on PlainSpell.
The verdict
“exostosis” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 9
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A benign, bony growth, often covered with cartilage, on the surface of a bone or tooth.
Corpus desk
Index EN-exostosis · exostosis · English
exostosis · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "E" 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 | exostosis |
| Language | English |
| Part of speech | Noun |
| Letters | 9 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “exostosis” in English
Rare enough to double-check
exostosis is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A benign, bony growth, often covered with cartilage, on the surface of a bone or tooth.".
We couldn't generate a plausible misspelling set for exostosis, and the word's spelling is regular enough that our generator found nothing worth flagging. No confusable counterpart is on file for this word, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Etymologically, the entry records: From Koine Greek ἐξόστωσις (exóstōsis, “diseased excrescence on the bone”), from Ancient Greek ὀστέον (ostéon, “bone”). The correct English form is exostosis, spelled E-X-O-S-T-O-S-I-S.
Definition
- 1A benign, bony growth, often covered with cartilage, on the surface of a bone or tooth.
Recorded use
Wiktionary examplesThese source excerpts show how exostosis appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Unquestionably, gentlemen, the bones most liable to exostosis are, first, the femur; secondly, the humeri; and thirdly, the lower jaw. But exostoses are met with on the sternum clavicle, and the bones of the head; in short, I may state, that there are no bones on which exostoses may not be produced.
Exostoses are the most common benign tumors of the EAC.^([External Auditory Canal])
Etymology
From Koine Greek ἐξόστωσις (exóstōsis, “diseased excrescence on the bone”), from Ancient Greek ὀστέον (ostéon, “bone”).
Synonyms
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.