abomasum

American  

[ab-uh-mey-suhm] / ˌæb əˈmeɪ səm /

Rarely abomasus

noun

plural

abomasa

1. the fourth or true stomach of cud-chewing animals, lying next to the omasum.

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abomasum British  

/ ˌæbəˈmeɪsəm /

noun

1. the fourth and last compartment of the stomach of ruminants, which receives and digests food from the psalterium and passes it on to the small intestine

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abomasum Scientific  

/ ăb′ō-mā′səm /

plural

abomasa

1. The fourth division of the stomach in ruminant animals, and the only one having glands that secrete acids and enzymes for digestion. It corresponds anatomically to the stomachs of other mammals.

2. See more at ruminant

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Etymology

Origin of abomasum

From New Latin, dating back to 1700–10; ab-, omasum

Example Sentences

The abomasum is the “true” stomach and is the equivalent of the monogastric stomach chamber where gastric juices are secreted.

From Textbooks • Jun. 9, 2022

The cud then passes onto the fourth stomach, the abomasum, where it is digested by enzymes produced by the ruminant.

From Textbooks • Jun. 9, 2022

The four compartments of the stomach are called the rumen, reticulum, omasum, and abomasum.

From Textbooks • Jun. 9, 2022

These animals do not have a rumen but have an omasum, abomasum, and reticulum.

From Textbooks • Jun. 9, 2022

The first stomach or paunch; b. the second stomach, bonnet, king's-hood, or honey-comb; o. the third stomach, or omasum; a. the fourth stomach, or abomasum; g. the gullet; py. the pylorus.

From A Treatise on Sheep: The Best Means for their Improvement, General Management, and the Treatment of their Diseases. by Blacklock, Ambrose