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noun

omasum

oh-MAY-sum

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Omasum (noun) means the third chamber of a ruminant's stomach, or its lining when used as food. Example: “The omasum squeezes water out of the food before it reaches the true stomach.”

noun

1

biology, food The third chamber of a ruminant's stomach, or its lining when used as food.

"The omasum squeezes water out of the food before it reaches the true stomach."

"In some cuisines the omasum is cooked and sold as a type of tripe."

"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)." — Seiki Takatsuki, 17: Geographical Variations in Food Habits of Sika Deer: The Northern Grazer vs. the Southern Browser (2009)

How to use omasum

Learner’s notes

In plain EnglishThe third stomach compartment in cattle and similar animals, also eaten as a type of tripe.

When to use it

It is a technical term used in biology, farming and butchery rather than general conversation.

Memory tip

Remember the order rumen, reticulum, omasum, abomasum if you need to place it among the four stomach parts.

Trace the full origin ↓

Easily confused with

abomasum →

Common pairings

omasum tripe leaf tripe ruminant stomach

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C2 · Advanced serendipity Fortunate discoveries made entirely by accident.

Gen Z slang rizz Charm — the ability to attract a romantic interest.

B2 · Intermediate empathy The capacity to share another person’s feelings.

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Etymology nostalgia Greek nostos “return home” + algos “pain”.

C2 · Advanced serendipity Fortunate discoveries made entirely by accident.

Gen Z slang rizz Charm — the ability to attract a romantic interest.

B2 · Intermediate empathy The capacity to share another person’s feelings.

C1 · Advanced nonchalant Casually calm and relaxed; unconcerned.

Internet slang delulu Delusional — believing something against the odds.

Etymology nostalgia Greek nostos “return home” + algos “pain”.

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Fill the gap

Can you complete this real example?

The _____ squeezes water out of the food before it reaches the true stomach.

Etymology

Taken directly into English from the Latin word omasum, borrowed as a technical term rather than passed down through everyday speech.

Origin: Latin

Synonyms

bible leaf tripe manyplies psalterium

Related words

book word Bible Scripture Isabel

Rhymes for omasum

abomasum

See all rhymes for omasum →

Frequently asked questions

What is the omasum?

It is the third of the four stomach compartments in a ruminant such as a cow, where food is further broken down and water is absorbed.

Is the omasum the same as tripe?

When eaten, the lining of the omasum is one of the kinds of tripe, sometimes called leaf tripe or bible tripe.

What are the four stomach parts of a cow called?

They are the rumen, reticulum, omasum and abomasum, with the omasum being the third in the sequence.

What is the meaning of omasum?

"omasum" (noun) means the third chamber of a ruminant's stomach, or its lining when used as food.

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