cementum
"cementum" is a 8-letter English headword indexed on PlainSpell.
The verdict
“cementum” 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) - A bony substance that covers the root of a tooth; cement.
Corpus desk
Index EN-cementum · cementum · English
cementum · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 8 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "C" 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 | cementum |
| Language | English |
| Part of speech | Noun |
| Letters | 8 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “cementum” in English
Rare enough to double-check
cementum is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A bony substance that covers the root of a tooth; cement.".
The misspelling generator found no plausible variants for cementum, and the word's spelling is regular enough that our generator found nothing worth flagging. It is not paired with a close-neighbour confusable in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: Borrowed from Latin caementum. Doublet of cement. The correct English form is cementum, spelled C-E-M-E-N-T-U-M.
Definition
- 1A bony substance that covers the root of a tooth; cement.
Recorded use
Wiktionary examplesThese source excerpts show how cementum appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
From a purely anatomic standpoint, root cementum is part of the tooth, but also part of the periodontium.
Cementum is the least known calcified tissue in vertebrates (Bosshardt and Schroeder 1996) and several questions about cementogenesis have not yet been answered.
Etymology
Borrowed from Latin caementum. Doublet of cement.
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.