Omasum

//oʊˈmeɪsəm// noun

noun ·Uncommon ·Advanced level

Definitions

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

    "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)."

  2. 2
    the third compartment of the stomach of a ruminant wordnet

Synonyms

All synonyms
psalteriumpsalteriumabdomenbay windowbeerbellybelly

Example

More examples

"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)."

Etymology

Learned borrowing from Latin omāsum.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.