# omasum

> English word · Noun · IPA /oʊˈmeɪsəm/

## Definitions
1. The third compartment of the stomach of a ruminant; the lining of said compartment, regarded as a foodstuff.

## Etymology
Learned borrowing from Latin omāsum.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/word/omasum