omasum
/oʊˈmeɪsəm/
"omasum" is a 6-letter English headword indexed on PlainSpell.
The verdict
“omasum” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 6
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The third compartment of the stomach of a ruminant; the lining of said compartment, regarded as a foodstuff.
Corpus desk
Index EN-omasum · omasum · English
omasum · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 6 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "O" 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 | omasum |
| Language | English |
| Part of speech | Noun |
| IPA | /oʊˈmeɪsəm/ |
| Letters | 6 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “omasum” sits in English frequency
Rare enough to double-check
omasum is uncommon English outside the top frequency list, classed as anoun, transcribed /oʊˈmeɪsəm/. Rarity is why readers land here mid-draft. Gloss: "The third compartment of the stomach of a ruminant; the lining of said compartment, regarded as a foodstuff.".
Zero misspellings are on record for omasum in our index, a straightforward case of a spelling with little room for common typos. This entry stands alone in our confusable dataset, since no other headword is close enough in sound or shape to pair with it.
Etymologically, the entry records: Learned borrowing from Latin omāsum. The correct English form is omasum, spelled O-M-A-S-U-M.
Definition
- 1The third compartment of the stomach of a ruminant; the lining of said compartment, regarded as a foodstuff.
Recorded use
Wiktionary examplesThese source excerpts show how omasum appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
The deer of the northern group are larger in body size and have well-developed rumino-reticulums, smaller omasums, and longer small intestines (Takatsuki 1988).
The omasum is a spherical organ filled with muscular laminae (an estimated 90 to 130 in the bovine omasum) that lie in sheets, much like the pages of a book (giving the omasum its colloquial name, book stomach).
Etymology
Learned borrowing from Latin omāsum.
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.
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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.