omen·​tum | \ ō-ˈmen-təm How to pronounce omentum (audio) \
plural omenta\ ō-​ˈmen-​tə How to pronounce omentum (audio) \ or omentums

Definition of omentum

: a fold of peritoneum connecting or supporting abdominal structures (such as the stomach and liver) also : a fold of peritoneum free at one end

Other Words from omentum

omental \ ō-​ˈmen-​tᵊl How to pronounce omentum (audio) \ adjective

Examples of omentum in a Sentence

Recent Examples on the Web Epithelial ovarian cancer sometimes spreads to the omentum, a layer of fatty tissue that covers the abdominal contents, so that is also usually removed for staging purposes, as are some lymph nodes in the pelvis and abdomen, the ACS says. Korin Miller, SELF, 13 Dec. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'omentum.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of omentum

15th century, in the meaning defined above

History and Etymology for omentum

Latin; perhaps akin to Latin induere to put on, exuere to take off — more at exuviae

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The first known use of omentum was in the 15th century

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Cite this Entry

“Omentum.” Dictionary, Merriam-Webster, Accessed 6 Oct. 2022.

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More Definitions for omentum


omen·​tum | \ ō-ˈment-əm How to pronounce omentum (audio) \
plural omenta\ -​ə How to pronounce omentum (audio) \ or omentums

Medical Definition of omentum

: a fold of peritoneum connecting or supporting abdominal structures (as the stomach and liver) — see greater omentum, lesser omentum

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